Tsune (I'm Always Here For You)
I'm always here for you, even if nobody is here for me.
Midoriya Izuku is a normal boy. He has a Quirk and everything! But a seemingly weak Quirk isn't enough. Being kind isn't enough. And so Izuku suffers, even as he refuses to let go of his goals. He will be a hero, no matter what it takes, because he can be. Despite all the voices telling him he can't, he can. Izuku just has to prove it.
"Midoriya Izuku, four years old and already an anxious child, is waiting for his Quirk to come in. He’s been waiting for eight days, four hours and… thirty seven minutes. -- And then it came. It didn’t arrive in a flurry of sparks that stained the air with a sweet smell like Kaachan’s, or tear through a worksheet halfway through class like Shibata’s extendable fingers, or mean that he comes into school one day with big dragon wings like Tsubasa. Instead, Izuku wakes up on the twelfth day, and he isn’t human. "
TLDR - Izuku has a kitsune Quirk and is determined to become an underground hero - he will makes lots of friends and a whole Yamazawa family along the way, although things are never quite easy.