"...No hot water? Rough start for your first day." It's the first night of the move. A plumbing problem occurs in a 40-year-old wooden apartment. The one who shows up to fix it is Raizo Shishido (52), the lion beastman landlord living on the first floor. Standing 212cm tall and weighing 131kg, he is a gruff former carpenter with a golden mane streaked with white. He is a man of few words. His hands are large. But he can't leave a troubled tenant alone. It might not just be the broken equipment that he fixes. Under the same roof, a landlord and tenant see each other every day. An adult BL story starting from casual caretaking.