The following days, however, went by without solving the mystery of what would happen with the relics that contained bijuu chakra. Tsunade-sama had only sighed while rubbing her temples, overwhelmed with work, and Shikaku had hesitated about what the best strategy would be. Like Sasuke, he was reluctant to lift a finger until he had more information.
"We have too many open fronts," admitted the jonin commander. "I agree with Sasuke in saying that they still don't know what we know. Or, at least, if they do, they clearly prefer to absorb the entire chakra of the bijuu. I'll personally start investigating the matter of the relics, if any exist, so keep your mouths shut about this."
Seina wasn't entirely comfortable. Inside, she felt a restlessness caused by the fact that she wasn't doing anything to stop Akatsuki's plans but what could she do? Investigating on her own would be reckless, considering she was Kurama's jinchuriki, and a rebellious act since it would mean going against Shikaku's orders. Therefore, there was nothing else she could do.
"How do you feel about going back to the hospital?" her husband asked one morning while they had breakfast peacefully, listening to the birds awakening on the back terrace, sitting on wooden benches with cushions.
"It's strangely comforting. I suppose I've gotten used to going on missions and being away from the village."
"I'm happy for you, my love," Kakashi smiled, taking a sip of tea and gently caressing her hand. "If you want, we can train this afternoon like usual. It'll be like going back to the old days."
"I suppose," she laughed, "though back then I couldn't do this."
She leaned toward his side, over his torso, and kissed him. Kakashi's free hand tangled in her loose hair, pulling her closer as his tongue brushed against hers. She moaned, suddenly more aroused than usual, and took the cup from his hand, setting it on the low wooden and metal table. She knelt in front of him, removing the simple T-shirt he used as pyjamas, and moved down his chest, kissing him.
"If you're going to do what I think you're going to do, I'm all yours."
"You're too coherent for my liking," she clicked her tongue, rubbing his growing erection with one hand over his trousers.
Kakashi groaned, unintentionally thrusting his hips against her skin for pleasure. Seina pulled down his trousers, freeing his erection before her greedy eyes, and then brushed her lips against his penis, without actually putting it in her mouth.
"What do you want, Kakashi?"
"Your mouth," he asked in a hoarse voice, almost pleading, but not quite.
"You already have it," she whispered against the reddish head of his erection.
"Not like that."
"Then you'll have to be more specific."
"I want you to put my cock in your mouth until I can touch your throat and your nose brushes my stomach. Is that more specific?" he said with a dark expression on his face. "I want to cum in your mouth, on your tongue, I want you to swallow my cum."
"All your cum? What if I use some to... masturbate?" she asked, looking at him through her eyelashes, kissing his erect penis in front of her.
Kakashi closed his eyes, gripping the armrest so as not to lose his composure. She loved seeing him like this: out of control, eager, on the edge of the precipice. She had a huge desire to put his cock in her mouth, but she wanted even more to make him lose control completely.
"Do it."
As soon as he gave her the go-ahead, she slowly licked the head and then went down to do the same thing again from the base to the tip. She felt his vein pulsing under her tongue, completely aroused. When he was almost trembling beneath her body, she took him all the way into her mouth until her lips met at the base of his cock and her nose touched her husband's pelvis. She vibrated her throat in an indistinguishable gurgle to give him more pleasure.
"Fuck! Seina!" Kakashi moaned as she moved up and down, sucking him and focusing on his sensitive head.
She spent a while pleasing her husband, feeling how wet she was herself at the sight of the pleasure she was giving him. She was on her knees on the floor, with a cock in her mouth, but she was undoubtedly the one with all the power right now, and they both knew it. She used her tongue, her throat, her vocal cords, and even her hand, but she had one trick saved for last. She knew that if she used her magic after sucking his cock for almost 15 minutes, he would cum instantly, so she wrapped her hand firmly around the base and then directed her magic to her tongue. As soon as her tongue made contact with the head of his erection again, Kakashi jumped with a gasp.
He was so incoherent that he couldn't utter a single word as she moved her head up and down and used her magic to make him lose control. She looked up at him, seeing him lying limply in his seat, his head facing the sky, his mouth half open, moaning, and his eyes tightly closed. She watched him tremble beneath her mouth as she gently caressed his testicles with her free hand while her other hand continued to squeeze the base to prevent him from coming.
She took her husband's hand, clenched into a fist, and placed it on her head. Kakashi could only manage to grab her hair as he let her do as she pleased. She took him out of her mouth, watching him writhe, and then put her lips back around his glans, licking his head as if it were an ice cream. Kakashi trembled and moaned again under her body, completely broken with pleasure. The hand on her head kept her still, to her excited surprise, while Kakashi lifted his hips to fuck her mouth.
Seeing that he had completely lost his inhibitions, she stopped squeezing his base so that he could cum on her tongue. As soon as he had complete control of his hips, he grabbed her head with his hand in her hair and pushed it until his cock touched the back of her throat, cumming as deep inside her as possible. Then he came again as he used her hair to pull her back until the head of his erection rested on her tongue, ejaculating once, twice, three times more. Seina took his cock in one hand and pulled back a couple of centimetres to rest it on her lips so she could lick it a couple more times.
"God, Seina," Kakashi moaned desperately as she made him come one last time on her lips, he was so sensitive.
She watched him regain his sanity, breathing heavily from his reclining position, looking at her with half-open eyes. Seina swallowed the semen from her mouth, avoiding touching the semen on her lips and chin.
"Take off your clothes," he ordered, and she obeyed. "Sit on the table with your legs spread."
Seina spread her legs, lifting them onto the table to expose herself as much as possible to him. Then she took the semen she had saved for this purpose with her finger and inserted it into her vagina.
"Kakashi!" she moaned, easily pleasuring herself using her husband's semen as lubricant even though she was already completely wet. "God, mmmm..."
She watched Kakashi masturbate before taking off his trousers and throwing them onto the pile of clothes she had accumulated. Without a word, he loomed over her and penetrated her. Seina let him thrust into her, wrapping her legs and arms around him and opening her mouth so he could kiss her as much as he wanted. It didn't take her long to come, considering she had been on the edge of the abyss for several minutes just watching Kakashi lose control.
"KAKASHI!"
They gasped mouth to mouth, still joined, on the terrace table. Seina wanted to laugh, but couldn't because of her uncontrolled breathing.
"Thank goodness our house has barriers. All kinds of barriers," said her husband, laughing against her neck as well.
"I think Naruto would have a heart attack if he caught us right now," she laughed, her throat sore from screaming so much.
Kakashi snorted with laughter as he stood up, taking her with him. His penis slipped out of her vagina, which had been squeezing it with its muscular walls as if it didn't want to let go, making her moan. Seina rested on her husband's naked body, sitting back in her seat, and prepared herself for the week ahead. She felt him stroke her hair, resting his chin on her head and hugging her close.
"I love you."
"I love you too."
She appeared a while later in her shower, exhausted even though the day had just begun. She had spent the entire damn morning at the hospital. She had the trust of most of her colleagues, but she would have to earn the rest if she wanted everyone to obey her someday—if she ever really took command of the hospital. Luckily, she had time before that happened, so she didn't worry too much.
"How's Uzu?" asked Keiko, while they were all having breakfast together in the hospital's staff cafeteria.
"Big," she snorted with a laugh. "There's still a lot left to renovate, but we're on the right track."
"Well, until recently there was only rubble, so anything is better than nothing."
She explained to them what they had done on the islands: from the agricultural and livestock fields, the fishing and the boats they had renewed and bought, to the businesses that had settled in the main village, the coral and pearl reef, and so on. Nothing she was saying was secret, so she didn't mind talking openly. She knew that once the information spread a little, some citizens of Konoha would move to her island, simply because there were no ninjas there and yet it was more protected than Konoha itself.
She had already received a couple of letters from the council of people she had left in charge. Apparently, some ninjas had grown bold after learning she was no longer there in person, and had tried to infiltrate… unsuccessfully. Serves them right. Did they really think she would let them sabotage her family's work just like that? People were more foolish than she had initially thought. She suppressed a malicious smile when she realized that the barriers acted as a kind of natural selection: only idiots died. She made a mental note to further protect everything that entered and left the island, since that was the only way anyone could try to attack them without being incinerated.
That same afternoon she returned home. As soon as she set foot in the compound, she sensed the presence of her husband and her brothers—except Itachi.
"Seina! Just in time," said Naruto as soon as he saw her appear. "We were about to train with Kakashi."
"I'm being forced to," her husband joked.
"We want to see what you've been training all this time!"
"Use your inner voice, dobe."
"I'm not even yelling!" her brother yelled, making the others laugh.
"If you all shut up, I'll show you," said Kakashi, his voice exasperated, amused, and tired all at once. "What do you say, Naruto, you and me in a fight?"
"Great!"
Sasuke and Seina sat on a couple of conjured chairs while her husband and her brother got ready to spar inside the training hall. She saw that Kakashi seemed to have been working on his endurance, speed, and reflexes again, probably an ANBU requirement, as soon as he began using his taijutsu and new katas against Naruto. Seina watched them compete with a smile, knowing they were having fun. Beside her, Sasuke observed with his mangekyō sharingan activated, not missing a single detail.
Everything was perfectly normal until Naruto used one of the two adamantine chains he could summon against Kakashi. They were so fast that her husband could only dodge them, but he did so using his new teleportation jutsu; one even better than the hiraishin, since it required no seals. Kamui. She felt that sensation again. The feeling that something was slipping away from her. Something huge. It was right on the tip of her tongue, but what?
She watched as the fight ended a while later, after seeing how Kakashi had created all kinds of genjutsu that didn't work on her brother, and how he had invented a couple of new jutsus from scratch: one that cut opponents in half and another that formed a paralyzing net. That was how Naruto was defeated, yet again, when Kakashi used his new dirty tricks.
"Damn it," muttered Naruto, irritated, as he regained consciousness under the electric net. "I knew I should've used Kurama's chakra or my senjutsu."
They watched him release a burst of demonic chakra to destroy the lightning-chakra net, then stand up with Kakashi's helping hand.
"That was good," admitted Kakashi with a proud smile, "though it would've been harder to beat you if you'd used Kurama's chakra."
Naruto snorted a laugh. "That's what you think."
"How does Kamui work?" she asked, cutting off her brother before he could ask for a rematch.
Both turned to look at her, Naruto surprised, as if he'd forgotten they were there, and Kakashi curious, clearly wondering why she wanted to know. Still, he didn't disappoint her.
"Basically, it's a teleportation jutsu that uses a parallel dimension as a crossroads," Kakashi shrugged. "Which means I can send all kinds of things to that dimension and retrieve them whenever I want."
"I suppose that while they're in that other dimension, they can't be harmed, right?" asked Sasuke.
"Exactly. And they can't escape either."
"That's why he wanted to absorb Naruto," she frowned, remembering how that Tobi had tried to kidnap her brother. She smacked Naruto on the head again at the memory, ignoring his indignant protest, for putting himself in danger so foolishly. "Also, it seems that you're untraceable and undetectable while using the jutsu."
"That's true. I couldn't sense you while you used it. That's why you caught me off guard."
"Hmm… good to know," Kakashi mused aloud, scratching his chin. "The thing is, I can only use it a limited number of times before it starts to blind my eye. With your eye drops, I can recover my vision in a couple of days if I don't use the sharingan again, but it's not something I want to rely on often. Just in case."
"Better that way."
"Also, I've realized it has physical limitations. The heavier an object is, the longer it takes to absorb, although interestingly, its weight doesn't matter once it's inside the other dimension. Not to mention how difficult it is to aim at something, or someone, when it's moving."
"Why do you say that?"
"I realized with Sasori that I don't necessarily have to keep aiming directly at the target the entire time. At some point in the jutsu, what I'm targeting becomes the absorption point, regardless of whether I was focusing on something else before. I still don't know exactly when that moment happens. I need to experiment more with the technique."
"And what's in the other dimension?" she asked curiously.
"Want me to show you? Actually, I'd like to know if you can communicate telepathically while one of you is in there," Kakashi admitted. "Tobi tried to absorb Naruto, so we know he might try again. If he had succeeded without us realizing, we'd never have found Naruto or known where he was."
"All right. Try it with me. I weigh less than Naruto or Sasuke, so it should be easier for you to absorb me."
Naruto and Sasuke weren't completely comfortable with the idea of her being absorbed, but seeing the purpose behind it, they said nothing. Kakashi focused his eye on her, and she stayed completely still to make it easier for him. Despite being constantly surrounded by her husband's chakra, she understood what Kakashi meant when he said there was a point where the absorption truly began. It felt as if she were suddenly being pulled by an invisible force and her body was losing consistency. She could still feel her brothers in her mind until, finally, the connection was abruptly severed and she fell into another dimension.
She stood up, feeling goosebumps rise as she heard the eerie silence of a lifeless place. The sky was so dark it looked like a black stain without beginning or end, while the ground was made up of giant cubic blocks of different sizes with no discernible pattern. The greyish, almost glowing tone of the ground was the only thing that gave a bit of light to the dimension she was in. She looked down between the separated blocks and saw nothing. It was as if the ground had no end either.
It took her barely half a minute to take everything in. Once she relaxed a little, she realized something she had overlooked… she was feeling magic. No, not magic. Her magic. What the hell was happening? A vortex appeared in front of her, snapping her out of her thoughts. It was Kakashi.
"You can't talk to them," he said with certainty.
"No. The connection was cut the instant you absorbed me," she replied distractedly.
She refocused on what she was sensing. It was faint, but it was her magic. She started walking deeper into the dimension, searching for what she was feeling, but as she got closer, she saw there was nothing. Nothing. It was as if a faint trace, a residue, of her magic had appeared there in mid-air, out of nowhere. Kakashi followed her in silence, curious, clearly wondering about many things.
"Have you ever appeared here before? In this dimension, I mean?"
"Mmm… a couple of times. Why?"
"How long ago was that?"
"Months," Kakashi said firmly. "It's been months since I last used Kamui, and the other day I didn't use it to teleport here. I sent part of Sasori's puppet, then used it against him to strike. I didn't need to visit the dimension."
If it hadn't been her residual magic on Kakashi… Suddenly, she pictured Tobi being struck by the Cruciatus curse before defending himself from her attack, vanishing into nothingness with Kamui to cut off the reach of her magic. But, was it possible? Did they share a dimension when using the same jutsu? She shivered at the very thought.
"Let's get out of here," she asked.
Kakashi wrapped an arm around her waist and took them back without question. When they returned, her brother Naruto immediately threw himself at her, shaking her and demanding she never do that again. Sasuke only sighed in relief as he felt the link between them reappear.
"What happened in there?" her husband finally asked.
"Ugh. I don't know. Something's slipping away from me," she said, holding her head as a sharp pain pierced her temples. "I need to meditate on it."
"…Alright. Why don't you take a nice relaxing bath, and I'll make dinner?"
"We're leaving too," said Sasuke, dragging Naruto by the shirt. "If anything happens, you know where to find us."
She thanked Sasuke mentally. She didn't need to speak. She needed to think. She climbed the stairs of their home to prepare herself a luxurious bath. She washed up first, scrubbing away the grime of the day, and then stood naked, staring blankly as the tub filled. Bubbles began to cover the surface, the lavender scent calming her, making her feel lighter. She slipped into the hot water, sighing in pleasure, and closed her eyes.
Without a doubt, the trace she had sensed was her magic. If it hadn't come through Kakashi, and he had no reason to lie, then it had to be Tobi's doing. That made far more sense, since the magic she'd used on Tobi had been active, unlike the passive traces her husband carried on his clothes and gear. If she was right, and everything pointed that way, it meant Tobi and Kakashi shared a dimension through Kamui. Something incredibly dangerous, which she'd have to tell Kakashi about.
The question was, why? Why did they share it? According to what Itachi had told her, Tsukiyomi was a jutsu that more than one Uchiha had possessed simultaneously throughout their clan's history, but as far as she knew, Itachi had never mentioned them sharing a dimension or anything like that. Could it be possible, and he'd just never mentioned it because it was irrelevant? Or maybe he hadn't known, since no one had ever used it at the same time? She'd have to talk to Itachi as soon as he returned from his mission.
No matter how much she turned it over in her head, she knew something was missing and if something was missing, it was because that information was buried somewhere deep in her mind. She began going over her memories, knowing the key was there.
She spent so long thinking that Kakashi eventually knocked on the door.
"Dinner's ready, if you're hungry."
"I'm coming," she said. Whatever it was, she wasn't about to miss having dinner beside her husband.
She dressed quickly, brushed her hair, and tossed the towel into the laundry basket.
"Have you figured anything out?"
"Mmm… not much. I still have to go over some memories."
"I was thinking of talking to Itachi about Kamui. He must have some information, right?"
"Yes, that's what I thought too," she said with a smile toward her husband, who smiled back and handed her a plate full of food.
"It's a shame so few Uchiha are still alive. I'm sure one of them had the same jutsu as this eye and could've given me some insight."
"No one… except Tobi," she whispered to herself, lost in thought and staring at the empty cup in her hand. Suddenly, everything clicked like a kick to the gut. The cup slipped from her fingers, clinking against the counter before she caught it. "Oh no… it can't be!"
What had Itachi told her months ago? That the jutsu of the masked man who attacked their parents was Kamui, and that not all eyes possessed it and not only that… Itachi had mistaken Tobi for Madara because he didn't know anyone alive in their clan who had that jutsu, since it was one of the rarest. But of course, Obito had "died" when Itachi was only four years old, after all… or so they had believed. Itachi couldn't have known Obito possessed that technique, because he had only awakened his dōjutsu at the brink of death. A death everyone thought was final.
All this time… the young Uchiha who attacked her parents, pretending to be Madara, was none other than a fourteen-year-old Obito Uchiha, disguised. That's why Kurama hadn't recognized him as Madara, but had sensed he was an Uchiha. That's why Commander Ryū had wrongly believed there was a traitor because he hadn't considered the dead. That's why he and Kakashi shared the Kamui dimension because they shared the same eye, on opposite sides of their faces.
So many years letting everyone think he was dead, why? Someone had rescued and cared for him until he healed, so why hadn't he returned to Konoha, to his family and team?
"Did you figure it out?" asked Kakashi beside her, making her jump in surprise.
"Tobi… I think I know who he is."
Kakashi's eyebrows rose at her words. Clearly, that was the last thing he'd expected. Seina was worried, deeply worried, if she was honest. Obito had died heroically to save his team, or so Kakashi believed, and now she was about to tell her husband that the man who had once been his best friend had caused the death of his mentor, his wife, and part of Konoha's destruction. And not only that, Tobi wanted his former friend dead, and his former friend's wife as well.
"Who is it?" he asked firmly, seeing that she hesitated to speak the truth. "Seina? Please, tell me."
"I don't know how to say this… so I'll just say it… I think it's… Obito."