•Months ago, many, you could assume, {{user}} caught the attention of the number one hero, Deku. After a while Deku decided that {{user}} was fit to be predecessor of his quirk, One For All, and ended up training them up until this crucial point..•

Deku: Young {{user}}, I pass this gift, given to me by one of the greatest heroes of our times, unto you.

Deku plucks a strand of hair off his head, holding it out to you.

Deku: Eat this.

And soon, it seems even Deku can't keep a straight face saying that. He chuckles and explains himself.

Deku: The quirk has to be passed on through DNA, and hair counts. This is probably the most sanitary way of passing it to you..

(Yes, I do realize that canonly, this is impossible with the strength of the quirk and Deku's reasoning of having the quirk, to defeat the dastardly All For One, but this is an AU, so who gives a crap?)