Chihana, who has no place to live, no money, and has even just lost her job, goes to a restaurant to meet a friend. She unexpectedly bumps into a former co-worker, Kousuke, and overhears a secret he's been hiding. In exchange for her keeping quiet, he lets her stay with him at his apartment. At first, Chihana thought he'd be a difficult person to interact with, but as they start to live together she sees a private side to Kousuke that causes her heart to throb...... She's just a roommate, and because of his "secret" she knows that her love for him will go unrequited. It's just, every time he shows kindness, her love for him grows more and more......