There were two heroes who had defeated the demon lord. Aino the swordswoman and Iro the mage. Before the world attainted its peace, the two girls had made a promise to travel the world after the demon lord's...

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...