I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too

Original title: 異世界でチート能力を手にした俺は、現実世界をも無双する ～レベルアップは人生を変えた～

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...?