Daiki Morishita, who transferred to another world and became a hero, came back to Japan, defeating the demon king.
However, in fact, in the dark society of Japan, the (in this case rare) world of battle-like battles was expanding.
This is a story that uses status and skills in modern Japan, and the heroes returning from other worlds apply power leveling to incompetent classmates.
Isekai Kaeri no Yuusha ga Gendai Saikyou! Inou Battle-kei Bishoujo o Bishibashi Choukyou Suru Koto ni!?
이세계 귀환 용사가 현대최강! ~이능 배틀계 미소녀를 엄격하게 조교하게 됐다!?