Kiss x Sis (TV)

Synopsis

Keita Suminoe has a problem with his twin step-sisters, Ako and Riko, being overly romantic towards him while his parents are away. He is uncertain what to do when his parents cannot attend a parent-teacher session. When Ako and Riko find the notice letter while snooping in his room, they go over to his school, only to be chased by several of their admirers. Keita stops everyone and tells his sisters off for causing a ruckus, but when he realizes why they came, he catches up with them and apologizes, revealing he turned down a recommendation to another school, and that he intends to study to get into their high school.

(Source: Wikipedia)