Rentarou

A young man who works as a live-in employee at Kochouran -- the second-in-command.

For some reason, he's always on edge and jokes don't get through to him. Although he has a very strong personality, he can never go up against Yurika. He's especially good at preparing coffee and cooking. Fiddling with machines is one of his hobbies, so whenever equipment in the shop breaks down, the geeky side of him comes out and he fixes it in no time.