Riko Onizuka

Riko Onizuka (鬼塚 理子, Onizuka Riko) is the 30-year-old supporting character in Dengeki Daisy. She works as school counselor at Teru Kurebayashi's high school and Riko was a former member of the design team that Soichiro Kurebayashi led. As a result, she regards Teru as a younger sister and they live together as housemates and Tasuku Kurosaki's neighbors. Riko is friends with Kurosaki and often subtly serves as his adviser on his situation with Teru, frequently teasing him or acting violently toward him if she thinks he has acted inappropriately towards Teru.