河西 紫
from Wolf Girl and Black Prince
Yukari Kasai is a classmate of Erika Shinohara and Kyouya Sata who ends up becoming a committee member together with Kyouya for their school trip. During the time where Kyouya and Kasai have to meet up to discuss about the school trip, they ended up becoming really good friends which made Erika quite jealous even though Kasai is not in love with him and it is later on discovered that she was just envious of their relationship and wanted to someday have a boyfriend as well.
Wolf Girl and Black Prince
While the proud Erika boasts to her friends about being lovey-dovey with her boyfriend, she has never really had one for 16 years. Feeling the limits of lying, she took a picture of a cool guy she found in town and showed it to her friends as her boyfriend. But the person in the picture happens to be Sata Kyouya who is in the same grade in their school. While she was able to explain the situation and convince him to act like his boyfriend, he was not the nice looking boy she thought he would be: he was a super sadistic schemer! Thus begins Erika's life blackmailed into being Sata's dog
