Every family has its share of problems, be they big or small. Shino Tadokoro has the perfect high school life, full of romance and friendship. Her biggest problem is her shut-in brother Tamotsu. She stubbornly keeps his existence a secret, telling even her closest friends that she is an only child. Completely oblivious to Shino's concerns, Tamotsu suddenly declares that he is giving up the shut-in lifestyle. Is there still time? The curtain rises on a tale of family reconstruction!
When you care about someone more than yourself, they call it "love." Shino Tadokoro has an older brother Tamotsu who used to be a shut-in. Shino is rapidly closing the distance between herself and her first boyfriend, Natsui. On the other hand, she is beside herself with worry as Tamotsu's heart is held captive by the little coquette Inaba-san. But as she watches over her brother's pure and awkward romance, a change occurs in Shino's heart?! As both love stories pick up speed, the siblings' relationship changes, too!!