Mio Keisuke is a high-schooler who leads a rather dull, boring life. He can't keep a girlfriendbecause being a kept man is too much of a hassle, and he can't bring himself to fall in love and want to please his woman. Thenone day he seeks shelter from a sudden downpour under the awning of an apartment owned by Yugi Kakeru and suddenly his life isn't so dull anymore as he finds himself falling for his aloof and yet obviously lonely friend.