L-Dk: Two Loves, Under One Roof (L-Dk: Một Mái Nhà, Hai Tình Yêu)
Aoi Nishimori and Shūsei Kugayama are in love and they begin to live together secretly. Suddenly, Shūsei's cousin, Reon Kugayama, comes to them. Their secret is discovered by Reon. Now, Aoi, Shūsei, and Reon begin to live together.