I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too, Vol. 2 (light novel) — Miku

After leveling up, Yuuya has obtained unbelievable physical abilities and the changes don't stop there! In the other world, Yuuya stumbles upon a fabled item of immense power and inherits its magic. And back home, Ousei Academy's off-campus learning starts with a band as Yuuya's success draws attention from all the girls in his class... But is everything going as well as it seems?