Surviving as a Genius on Borrowed Time
. . . . MC was shunned by his family because he has short lifespan (smth about his head acute point being too wide open, which makes him life for waaaay shorter time then others) and he spent his days honing, learning and creating new martial arts (it comes easy to him cause this wide opening that shortens his live gifts him profound understanding of martial arts). One day his clan is attacked, most of it is killed by one of 13th notorious evil sects, however it's leader takes a liking of MC and let's him live. Then MC goes to desolate castle sect (?) where his maternal mother was from (she died while giving birth to him) and decides to join it and learn there and maybe find a way to fix his short lifespan. . . . . . . . . . . . .
Heavenly Grand Archive’s Young Master