Futotcho Kizoku Ha Meikyu De Waltz Wo Odoru 1 (OVERLAP) [Light Novel]

[Machine Translation] Mitroff de Vincent Cai, the third son of a fat aristocrat. He has been given up as a man who can do nothing more than eat and sleep, and he has been banished from his home. Mitroff enters the labyrinth to earn money for food, and while experiencing "sublimation," a rise in rank as a creature, he meets a girl named Gracie, an elf, who is cursed by the labyrinth's relics, along with a girl named Kanure. He spends his days hiding in the labyrinth with Glacier, an elf girl he meets in the labyrinth, and Kanure, a girl cursed by the relics of the labyrinth. As Mitroff and his friends continue to successfully conquer the labyrinth, a troll, which should normally inhabit the deeper levels of the labyrinth, appears before them. Moreover, the troll is an abnormal individual that has "eaten" the guardian of the labyrinth.

太っちょな貴族の三男、ミトロフ・ド・バンサンカイ。食う寝るしか能がないと見限られた彼は、家を追放されてしまった。“食費”のために迷宮に足を踏み入れたミトロフは、生物としての位階の上昇―“昇華”を経験しながら、迷宮で出会ったエルフ族の少女・グラシエ、迷宮の遺物に呪われてしまった少女・カヌレと共に、迷宮に潜る日々を送る。順調に攻略を続けるミトロフたちの前に現れたのは本来ならば深層に生息するはずのトロルだった。しかも、トロルは迷宮の守護者を“喰らった”異常個体で―。