A chill run down Finn's body, he knew he didn't imagined that voice.
"Yes. You are not wrong, brat..." the deep voice rang in Finn's mind again
"Kyubi" Finn said astonished.
A simple grunt of displeasure responded to Finn.
"You know my name, brat " kurama said with clearly disgust.
"Kurama..." Finn pronounce it softly, almost like a whisper.
"Hmph... I can feel it. You are surprised, but why? You feel it my power before, you knew I was always here " kurama said again
"Why now? Why wait almost a month until communicate?" Finn asked carefully, he knew he wasn't naruto to evangelize kurama with just words or minato to seal and retain him.
"Simple, because I couldn't until now. All this time you've been using a fraction of Minato's chakra which is not really bounded to you, so I could never reach you even if I knew you were there." Kurama explained "But now it's different, now you have your own real chakra running through your body..."
Everything went silence for a few seconds before a macabre laugh rang on Finn's mind, he swore kurama is doing it on purpose to scare him.
"You know, it took you less time as expected to learn the take over and even less to obtain your own chakra." Kurama said
"You said you were expecting this? You knew this was going to happen?" Finn asked, now alert by kurama's words.
Kurama's laugh rang in Finn's mind again, he clearly was having a fun time with finn.
"Hahahaha... Of course I knew. It is not difficult to guess your actions with your simple way of think. But in your favor, I have to said I thought it would took you a few years before learning it. I thought you would focus on increasing your magic power to use your magic to travel between worlds." Kurama confessed.
A chill ran through Finn's body again, remembering that kurama could watch his actions and memories at any time.
"... it's a shame, but looks like we are running out of time" kurama said before going silence.
"Out of time? What do you mean?" Finn asked confused.
"The fact that you got chakra doesn't mean that you are immediately my jinchuriki, brat. I am using a monstrous amount of chakra just to overcome your take over magic and reach you, so do not expect me to help you in your fights, hahahaha. I'm just gonna sit here and watch you getting beaten." kurama laughed again, before leaving Finn alone with his ideas.
With the final words of kurama, Finn finally sigh relaxed. It was just for a short time, but having kurama on his mind and his chakra connected to him was a huge pressure, not physically, but mentally.
Slowly finn lifted his hands, previously wounded and in pain due the constant training with the rasengan, now they were fully recovered, it took just a few minutes to kurama's chakra to completely heal his wounds. A huge prove that kurama was indeed connected with him even for just a short time.
Finn sighed again, before remembering what the system said before about his chakra and the rasengan.
Lifting his hand again and focusing on creating a rasenga, the rasengan formed almost instinctively in his hand. There was not struggled neither problems on retaining the power like before.
"Awesome, it was created almost instinctively" Finn said surprised, before disperse the rasengan.
————
Fairy Tail, Makarov's office
Makarov stood quietly in the edge of his window, watching in direction to the border of the east forest and the lake sciliora.
He have keeping an eye on finn ultimately, he admired his determination to grow and his dedication to help in the guild.
In this last 3 weeks finn took around 25 missions, way more than any wizard of his age. Cleaning, fighting, exporting supplies, protecting supplies, and more, it doesn't matter what mission was, as long as he could take it he will do it.
"The kid is growing fast" makarov said to himself, sensing Finn's chakra what for him was just a strange energy that finn could use thanks to his take over.
"Well, it took him three weeks to finally grow that strange energy of him, but oh boy. I never thought it would growth that much!" Gildarts exclaimed with a huge smile, sitting in one of the couches of the office.
In front of Gildarts was laying a mission report next to a big letter, a town was asking for compensation to makarov after Gildarts single blow destroyed half of the town.
"No... this is not the same energy than the one he has been using until now, this felt much stronger, much dense. I think the boy just reached something different" Makarov explained, watching to the forest impregnated with Finn's chakra.
Gildarts nodded too.
He knew finn would eventually reach high between the wizards with his dedication to train and do missions, but after this night he thinks that finn might grow faster than he first thought.
"He might reach the S class in 2 or 3 years." Gildarts said with a smile, already imagining finn as a Class S wizard.
"He surely have the potential to be one and more, but it's on him and his determination to reach that level" makarov said, agreeing with Gildarts. "All we can do is wait and watching grow, just like with the other young wizards."
————
East forest, magnolia. One week later.
¡¡SMACK!!
"¡Crap!" Finn exclaimed crashing a few times on the ground before using his hands to impulse himself towards a tree and stood on it using his chakra.
Finn rubbed his jaw before looking inside his white coat and pulling to kunais with explosive seals and throw them to the 5 vulkans below him.
"Take this, stupid monkeys!" Finn exclaimed, watching the seals explode, taking down 2 vulkans and stunning the other 3. "Now. ¡RASENGAN!"
Finn launched against two vulkans, with one rasengan in each hand, hitting right in the face the vulkans and killing them instantly.
¡¡ROOOAAAAAAR!!
The last vulkan roaded trying to hit finn, but he used an incomplete technique of the rasengan to stop the vulkans punch with just chakra streams.
"Looks like the ugly monkey is angry~" Finn mocked, jumping and evading another punch.
In the air, he used the vulkans fist to impulse himself to the air and using wire strings, he tied the vulkans arm and neck, before jumping to a tree and pull hard until breaking the vulkan's arm and neck.
"Sigh..."Finn sighed heavily freeing the dead vulkan and dispersing his partial take over, making his clothes turn normal with a puff "wow. Using take over magic to pull Minato's clothes and gadgets cost me way more than the chakra system."
After 1 week of getting his own chakra, finn got the idea of trying to get Minato's clothes and gadgets, but he would've never guessed that it would cost him way more than before.
The only reason he could imagine is because his magic is creating the gadgets and not just pulling it from minato like with the chakra.
"I hope this work, kurama" finn said
"Who do you think I am? Of course it will work, exhausting your magic continuously will help you grow your magic power quicker." Kurama responded.