L-DK Hitotsu Yane no Shita, (Suki) ga Futatsu (2019)

Aoi Nishimori (Mone Kamishiraishi) and Shusei Kugayama (Yosuke Sugino) are in love and they begin to live together secretly. Suddenly, Shusei's cousin Reon Kugayama (Ryusei Yokohama) comes to them. Their secret is discovered by Reon. Now, Aoi, Shusei and Reon begin to live together.