Suppose a Kid from the Last Dungeon Boonies Moved to a Starter Town, Vol. 7 (light novel‪)‬

MAXED OUT SKILLS IN A MID-GAME BATTLE! The Ascorbic Domain-a sacred training ground that attracts all who aspire to master martial arts. At the moment, its influential leader, Anzu, is starting to feel out of sorts. After all, she’s been tasked with the impossible challenge of training Lloyd, and the seemingly unremarkable boy has started to freestyle, whipping out his own moves and splitting mountains as his warm-up exercise. Is there anyone out there capable of teaching this kid a lesson? Maybe a demon lord? Well...speak of the devil, and he shall appear...