Mystic Demon Slayer

Ughhhh….

'Where am I….'

Regaining consciousness slowly Zenitsu started getting a huge headache as the new memories were jumbled all over and confusing so he kept his eyes closed as to sort them out as he doesn't seem in danger for the moment and it won't hurt knowing where he is and what's his current situation

After almost 2 hours of going through the memories he completely integrated them and completely understood where he is, slowly opening his eyes he couldn't help but sigh

'This world is weird with demons all over the place, and let's not talk about the breathing techniques I mean they do exist in my past world as they are an important part of martial arts, swordsmanship… but the effect they have here is completely different, I'll check them out later as I already have one in my head…'

'What should I do now, this is too sudden of a transformation, I was just fighting a war then I died and appeared inside the root and now I transmigrated...'

'This is a new chance for me to live a new life, I Totsu zenshi...NO I Zenitsu Agatsuma shall live to fullest, following only my heart...'

'Past owner of this body I know you cant hear me but I shall take your place and become the greatest demon hunter to even live your name… no, our name shall be known and feared by every demon and revered by every hunter...'

Finishing his contemplation Zenitsu felt as if a huge load was off his c.h.e.s.t so he smiled and opened his eyes just in time for the door to open as a small old man entered, seeing him he smiled happily and said

"Gramps..."

Seeing him awake Jugoro smiled and asked

"How are you feeling ?"

"I feel fine no I feel better than I ever had…"

"Good to hear it..." after the thinking for a bit he added a bit hesitant "About training..."

But before he could finish he was cut off

"I Will train and get stronger… I will become the strongest!!"

Hearing him it was an understatement to say Jugoro was shocked 'this is weird… he is totally different… those eyes… they are full of confidence and resolve… I was going to try and motivate him, but it appears that it is unnecessary…' smiling slightly he though 'He grew up, I don't know what caused it, maybe the lightning strike or something else, but I am happy nonetheless' Sorting his thoughts out he said

"Rest for now, we shall go back to training tomorrow…."

And with that, he exited the room

Looking at the retreating back Zenitsu smiled sadly 'i may not be him but I got his body and memory, he is me, so thank you for everything you did, I will try to make you proud' clearing his mind Zenitu went back to the serious stuff 'i need to test my body and control it well before tomorrow, I also need to figure out what the Lightning and Death concepts did to the body as it is very different from the body in the memory, okay lets start testing…'

* * *

In the room a golden-haired kid can be seen moving around fast as he disappears from a place to just appear in another in a burst of golden lightning, following that he started punching the air, jumping, doing push-ups… and finally, after an hour of testing, he got a conclusion

The lightning concept made my affinity for lightning so high it's ridiculous, now I am way faster and stronger than before

And I can do the breathing technique way easier now as it feels natural I even feel that using the lightning concept and the old breathing technique from back home I can improve the breathing technique, ill focus on that latter

As for the death concept, all it has done is changing my eyes a bit I can transform them into blue color with a red circle around the pupil, but it feels like there is more to them, as if something is blocking it, its like he needs to do something for its power to be released

'Death is one of the strongest concepts out there, whatever that is it probably is strong I need to figure out how I can use it trough..'

'Going back to the breathing technique I can improve it with the concept of lightning and maybe add some things here and there to improve it, I mean my family in my past life had an history of 2000 years of swordsmen and I was forced to learn a lot of them, now I am thankful for that...'

Moving towards the bed Zenitsu sat on it as he started analyzing the technique as to improve it 'sighhh, this will take a lot of time maybe months or years but the finished product will probably be worth it' and with that, he refocused on his task…

After an unknown period passed zenitsu opened his eyes as he rubbed his head and collapsed on the bed 'that was tiring I need some rest tomorrow will be a long day...'

* * * * Author * * * *

God I can't believe you cant guess his power even now --'

Okay ill make it easier (Root, Death, Blue eyes with rose/red around the pupil)

I'll include an image of the eye in the comments so do check it out

I cant help you more than that :c

* * * * * * * * * * * *