Kazuki Suzuki used to be a hardcore whale gacha gamer, then he gets reincarnated as a “hot-spring dungeon core”!?

As a dungeon that controls healing baths, he opens a mixed-species “Holy Spa.” But if his core gets “secured,” he’s doomed to spend his life as a device that only obeys orders, basically, a slave. To regain his freedom and a human body, he’ll have to collect money, information, and abilities from customers while dragging the three major powers into the mess.

With Sharlotte, a freeloading fallen angel, and Rin, an almost too capable (and slightly overworked) receptionist who sometimes gets made to say “Master,” as his partners, he uses healing × business × gacha-brain to turn even war into “customer acquisition”... A steamy management comedy in a cloud of hot-spring mist!