An unflappable girl and a cast of lovable male roommates at a boardinghouse create bonds of friendship and romance. When Ten moves out of her parents' home in the mountains to live in a boardinghouse, she finds herself becoming fast friends with her male roommates. But can love and romance be far behind? Ten wants to know everything about the boy she likes, so she asks Shiraoka about Riku's past. But the truth that lies hidden behind Riku's smile is devastatingly painful.