I was curious about what a female-oriented tragic romantic fantasy was like, so I skimmed through only the free chapters. And then… “…Ha.” I found myself transmigrated into one of the main male characters...

Masuda Keima, a lazy high-school boy who prefers to laze around and avoid working, gets summoned as a dungeon monster by a girl avatar named "Dungeon Core No. 695" who is the dungeon core of the mighty one-room...