By the will of the goddess, Itsuki Shinomiya was given the privilege of choosing various abilities and being reborn in another world. However, before going to the other world, he didn't want to involve himself...

The world I transmigrated into was a dark fantasy game universe, devoid of hope or dreams. Doesn't feel like it at all, though. Original NovelOfficial English

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...