Saikin, Imouto no Yousu ga Chotto Okashiinda ga. OVA

Synopsis

The OVA consists of two segments. In the first, Torii Shoutarou secretly follows his younger sister during her date. The second takes place on Christmas Eve, when Mitsuki, Yuuya, and their friends gather at Kanzaki's house. This OVA is bundled with the limited edition seventh volume of the manga.