Shinohara Erika tries to fit in at her new high school. She finds that her new friends; Marin and Tezuka only want to talk about their boyfriends, so Erika follows suit and makes one up. Her new friends start to believe she's lying about it, so Erika takes a picture of a good looking guy to convince her friends that she has one. It just happens that the boy she took the picture of was none other than Sata Kyouya, the prince of class 8. Erika tries to convince Kyouya to be her pretend boyfriend. He accepts with one condition: she must be his pet.