I Got A Cheat Skill In Another World And Became Unrivaled In The Real World Too (Light Novel) Vol 01

A door to another world stretches out before a boy who’s been brutally bullied all his life. This alternate reality grants him access to all sorts of things, like cheat skills and a portal that lets him travel between his old and new worlds! Can this class loser turn his life around back home...? Yen Press
(W) Miku (A) Rein Kuwashima