Deeply moved by her absolute faith in him, Kazuma pulled her into a tight embrace.
"Thank you for trusting me."
They sat cross-legged on the grass, facing each other.
Kazuma carefully gathered a microscopic sliver of his highly condensed stellar Reishi, slowly guiding it into Batsu'unsai's soul sleep.
To prevent any lethal accidents, he kept the volume incredibly small, ensuring that even if her body rejected it, it wouldn't threaten her life.
The moment the stellar Reishi entered her system, Batsu'unsai gasped.
She felt her own standard Spiritual Pressure begin to boil violently, spiraling out of control.
The higher-dimensional energy was far too domineering; it immediately began rampaging through her spiritual pathways, aggressively devouring her native Reiatsu.
Sensing the violent reaction, Kazuma panicked. He tried to physically pull the stellar energy back out.
"Batsu'unsai, quickly, mobilize your own Spiritual Pressure to push it out! If this continues, your core will be completely consumed!"
Feeling her internal reserves rapidly plummeting, Batsu'unsai gritted her teeth in defiance.
Instead of fighting it, she forcefully merged what little Spiritual Pressure she had left directly into the rampaging stellar energy.
"It's no good! The energy is completely out of my control, I can't extract it!" Kazuma yelled, sweat beading on his forehead.
Just as Batsu'unsai's native Spiritual Pressure was pushed to the absolute brink of depletion, the violent stellar energy suddenly calmed, though it continued to quietly absorb her remaining reserves.
'It's over,' Kazuma thought in despair.
Just as her spiritual power hit zero, he genuinely feared he had accidentally stripped away her Shinigami powers forever.
But a second later, the stellar energy pulsed, reversing the flow and rapidly replenishing Batsu'unsai's core with a new, fundamentally different power.
Kazuma watched nervously as the Reishi radiating from her body began to climb steadily.
Batsu'unsai slowly opened her eyes, letting out a breath of pure awe as she examined her hands.
"My total volume of Spiritual Pressure has decreased significantly... but the sheer density and quality of it is unimaginably stronger."
Kazuma let out a massive sigh of relief, the crushing weight in his chest finally lifting.
He wiped his brow and smiled. "It seems the experiment was a terrifying success."
Overjoyed, Batsu'unsai threw her arms around Kazuma's neck.
"Thank you, Kazuma!"
He gently stroked her hair, his voice incredibly soft. "There's no need to thank me. But remember, this power is highly volatile, so you must be extremely careful when wielding it."
Batsu'unsai nodded obediently, her eyes shining with determination. "I will. I'll master this power so I can protect myself and our future family."
Hearing her mention a family again, the tension left Kazuma's body, replaced by a warm, wicked smile.
He leaned in close to her ear, his voice dropping to a teasing whisper. "Well, didn't you just say we should have a child? We'll have to work very, very hard on that."
Before she could protest, Kazuma swept Batsu'unsai into his arms, carrying her effortlessly toward the wooden cabin.
She let out a startled gasp at the sudden bridal carry, but quickly melted against his chest, a deep, shy blush spreading across her face.
Carrying her inside, Kazuma kicked the door shut and gently laid her on the futon.
As their eyes met, the centuries of unspoken longing and deep, abiding love burned intensely between them.
They held each other tightly, savoring the absolute warmth and sweetness of the quiet afternoon.
In the peaceful isolation of the cabin, they finally let go of the long centuries of waiting, losing themselves in each other as if they were the only two people left in the world.
...
The next morning, bright sunlight streamed through the window, casting a warm glow over Kazuma and Batsu'unsai, who were still tangled in each other's arms.
A gentle breeze rustled the curtains, and Batsu'unsai slowly fluttered her eyes open.
Seeing Kazuma sleeping soundly beside her, a blissful, contented smile bloomed on her face. She gently untangled herself from his grip and slipped out of bed to prepare breakfast.
Just as the smell of cooking rice filled the cabin, Kazuma woke up.
He walked up behind her, wrapping his arms around her waist and resting his chin on her shoulder.
"Good morning, my beautiful wife."
Batsu'unsai turned her head, pressing a kiss to his cheek. "Good morning. Go wash up, breakfast is almost ready."
After eating, they stepped out into the courtyard together. Kazuma stretched his arms high above his head.
"The weather is perfect today. Let's go for a walk." Batsu'unsai happily agreed, and the two strolled hand in hand along the quiet, sun-dappled path bordering the lake, soaking in the rare tranquility.
'I really wish every day could be exactly like this,' Kazuma thought, a contented sigh escaping his lips.
But his mind inevitably drifted to the harsh reality of the timeline.
The main storyline of the Soul Society's violent history was creeping closer.
If his memory served him right, a massive, tragic event was just on the horizon: the brutal 11th Division Captain, Kenpachi Kuruyashiki, was about to be challenged and killed by Sōya Azashiro.
'I need to find the time to pay Kuruyashiki a visit,' Kazuma resolved internally.
In the original lore, Kenpachi Kuruyashiki was a phenomenal talent.
Not only was his raw combat strength absolute top-tier, but the Zero Division had even tried to recruit him to the Royal Guard.
However, Kuruyashiki had turned them down, claiming he couldn't stand the boring isolation of the Soul King Palace and believing his place as 'Kenpachi' was firmly within the Seireitei.
To have another monstrously powerful ally against the impending threat of Yhwach and the Lichtreich, Kazuma knew he had to save Kuruyashiki from Azashiro's coup no matter the cost.
Although Kazuma was confident he could go head-to-head with Yhwach, he knew the Sternritter—armed with their Vollständig transformations and Bankai-stealing medallions—were an apocalyptic threat.
The future Gotei 13 Captains would be utterly decimated by them in the early days of the Blood War.
The situation was grim, and he needed every heavy hitter he could get his hands on.
As for Ichigo Kurosaki, Kazuma wasn't about to pin the fate of the universe on a teenager who hadn't even been born yet.
In this brutal world, relying on his own prepared strength was the only dependable path.
But how could he naturally approach Kuruyashiki? Kazuma racked his brain.
He wasn't particularly close to the brawling Captain.
Then, a detail clicked into place: Kuruyashiki and Shunsui Kyōraku were incredibly close drinking buddies.
After Kuruyashiki's death in the original timeline, Shunsui was the one who frequently visited his grave to mourn.
'Alright, it's decided! First things first, I'll go track down Shunsui and have him introduce me to Kuruyashiki.'
With a clear plan formed, Kazuma squeezed Batsu'unsai's hand, ready to get to work.