Boshoku Hi No Ken 1 (Overlap Bunko) [Light Novel]

[Machine Translation] Dean, a third-rate adventurer, leads a poor life as a "courier" for hire. When Dean dives into a magical labyrinth as a "courier" for an adventurer, he is surrounded by magical beasts due to his employer's mistake. Left behind as a decoy, Dean escapes for his life at the bottom of a hole in the labyrinth. There, Dean encounters the heart of Queen Belzebute, the most powerful demon with the ability to feed on power. The heart of Queen Belzebute was the nucleus from which the "Magic Eater Sword Belzera" was created, a magical device that possesses a sense of self. Dean, aiming to become the first-class adventurer he has always dreamed of, challenges the demon labyrinth with the sword of Queen Bite...! The weakest adventurer's adventure with the "Devil of Binge Eating" is about to begin!

雇われの“運び屋”として、貧しい生活を送る三流冒険者のディーン。とある冒険者の“運び屋”として魔迷宮に潜ったディーンは、雇い主のミスによって魔獣に囲まれてしまう。囮として置き去りにされたディーンが命懸けで逃げ延びたのは、魔迷宮の穴の底。ディーンはそこで、力を喰らう能力を持つ最強の悪魔・暴食妃ベルゼビュートの心臓と邂逅を果たした。暴食妃の心臓を核に生み出されたのは、自我を宿す魔導器―“魔喰剣ベルゼラ”。ディーンは憧れの一流冒険者を目指し、暴食妃の剣と共に魔迷宮へと挑む―!最弱冒険者が“暴食の悪魔”と歩む冒険譚、開幕!