Koto is a cold, solitary adventurer who dives into dungeons alone. One day, he meets Milly by the roadside—a young healer girl who was kicked out of another party. He intended to ignore her, but she grew attached to him. Not only that, she ended up moving into his house…! The strongest adventurer and a clumsy healer conquer dungeons in this clumsy-but-cute cohabitation fantasy. The long-awaited comic adaptation begins!