Two Students

The Two Students are unnnamed classmates of Takatsukasa Riju and Sakaki Shunsuke who appeared in the first OVA episode. After seeing Chisato serve them desserts, they take an interest in him and ask Riju who his (Riju's) "cute older sister" is. Moments later, they suffer from food poisoning due to the laxatives Chisato added to their desserts, and rush out the front door of Chisato's home. Chisato watches them leave and smiles, saying: "Don't ever come back." They have not been seen again since but they still hang out with Riju during school.

Appearance
One of them has dark brown hair with sideburns and the other has green-grey hair worn in a style somewhat similar to Riju's. Both were seen wearing their school uniforms, consisting of white, collared shirts worn over plain undershirts. The brown-haired one has a slight reddish tinge to his cheeks.