Mei has been living alone since her beloved older brother, Saeki, died. Suddenly, a guy named Reon came and abducted her. Why do they have to live together? No matter how Mei hates malicious Reon, another feeling starts to appear. Then, Saeki, who was thought to be dead, returned!

Note: Includes the one-shot "Koisuru Hokenshitsu (恋する保健室)".