Prologue

Useless, worthless, pathetic.

Those were the words I hear after finding out I was quirkless, many began bullying me because of it my father started abusing me and my mother barely payed attention to me but now.

"Amazing it appears he was just a late bloomer!, and not only that but his quirk is amazing!"

an old lady spoke to my parents in this world in joy meanwhile I was just thankful we didn't live in Mustafu so the doctor wasn't the one who was with All For One. But just a kind old lady when after diagnosing me as quirkless actually allowed me to visit the hospital and her home when my parents didn't feed me.

"You hear that son you have a quirk!"

My father was looking at me with a smiming face, he was a retired support hero with the ability similar to Recovery Girl but his quirk instead required him to give his own blood and apply it directly on a person's wounds to heal. He got sick of this and retired and took a job in a local clinic, but that doesn't excuse him from the fact that everytime he got annoyed he would hit me and abused me just for being quirkless.

"We're so proud of you Hairo!"

My mother spoke to me and held my hand happily, she was also a retired hero who worked for endeavors agency her quirk allowed her to strengthen herself she had a super power quirk. It basically just strengthens her to the point she could stop a truck but that was it. After meeting my father she had realized the hero life wasn't for her and she married my father after a year of dating and had me after 3 year's.

But she was no saint as a after finding out I was quirkless she would hit me and punish me and would even make face me the wall with my arms up, she would even make me do EVERY chore in the house like it was some punishment it honestly felt like training due to the amount I was doing. 

'Hah? Just because I'm not quirkless anymore your all acting like this?' 

I looked at them coldly after reincarnating to this world I actually thought I would have a happy childhood but I guess whoever reincarnated me was a really asshole, but now I not only have the looks and names of two demon slayer characters I had a basic system with an amazing quirk. 

[Status] 

Name: Hairo Kibutsuji 

Quirk: Biokinesis(Muzan Version) (E) 

Rank: E

Skills: None. 

It was simple but I knew it would help me in the long run, sure my control over my quirk was only at E-Rank but after testing it out last night before vising the doctor I was able to heal a few small wounds by willing my cells to regrow. And I could even control the blood outside my body to he point I was able to make a really small kitchen knife. 

'I guess I should learn up on some medical knowledge to get a further understanding on my body but first...'

I looked at my parents and the doctor before yelling with the frustration of a child as tears began forming In my face. 

"Y-You were so mean to me when I didn't have a quirk! You k-kept hitting me when I did nothing wrong! So W-when I got one you all change!?" 

'God this is so cringe, but seeing not only their faces I was sure my plan worked. Since in this world abusing your child for being quirkless was illegal since child abuse in no matter what excuse is child abuse' 

"H-Hairo!"

My father was the first to act and turned tot he kind old lady who had pressed a button under her chair and soon enough two of the guards up front came through the door. 

'Perfect' 

(Sometime later) 

"And so I here by punish both Mr and Mrs Kibutsuji for Grade 5 Physical Abuse against their 5 year old son, thus they will be given 2 years of jail time with their son being given Mrs. Kibutsuji's father retired high rank hero Sorahiko Torino" 

With a smack of his gavel my parents were taken away with hand cuffs while I was sitting in one of the the chairs in the court room with only one thought in my mind

'Wait what?' 

Due to the fact that I didn't even know my mother's maiden name I actually expected to be sent into foster care, but not only was she the daughter of a past high ranking hero but said grandfather is both the mentor of two one for all users.

'This isn't what I expected but I'll go with it for now.'