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

When the home left to Yuuya by his grandpa leads him to another world, Yuuya levels up in his own mundane reality! But despite his new otherworldly cheat, his life is still far from easy—his old bullies have an even bigger bone to pick with him while his new acquaintances from the elite Ousei Academy hold him to lofty expectations. Then, as Yuuya struggles with his new responsibilities, political schemes of the other realm threaten to throw his hard-earned peace into chaos…