I Got a Cheat Skill in Another World and Became Unrivaled in the Real World Too [TV]

Yūya Tenjo is an overweight, short and meek middle school student who is bullied at school and tormented by his family, except for his grandfather who is the only person who cares for him. When his grandfather dies and leaves Yūya as the sole heir of his house, his parents expel him from home, and he is forced to live there alone. Inside his grandfather’s house, Yūya discovers a portal to another world named Argena, where he obtains power that will change his life forever as it leads him into battle against multiple powerful malevolent entities, demons, extraterrestrials, and even gods, sometimes for the sake of the very fabric of existence itself, in the past, present and future.