異世界古書店は命懸けです

Takamori Yuzuki, who changed jobs and works at a chain of secondhand bookstores, was promoted to area manager in charge of managing multiple stores thanks to his efforts, but an unfortunate accident during work resulted in him getting a ticket to reincarnation in another world. He had hoped to live a safe life in a “world where books can be read”, but he was caught up in a family summoning spell performed in the hall at the bottom of a dungeon called the Labyrinth of the Abyss, and was reincarnated as an executive of a group of madmen led by Dungeon Master LaViola…

While working as a manager of a secondhand bookstore, he also leads a double life as Yuki, the weakest family member. Yuki’s adventure begins with his cheerful and scary minions.