Chiharus energetic sister she looks like a shorthaired cheekier version of Chiharu. Despite being fully aware of Densuke and Chiharus feelings for each other Yuriko likes trying to get Densukes attention most often attempted by jumping on top of his face. She also likes rubbing her sisters breasts to tease her because of her own lack of giant breasts as she only has a 73cm Acup bust. Densuke finds out later in the manga that her weakness is her butt which is often focused on in both media. She often greets Densuke by jumping into him landing seated on his face and usually leaves her buttocks or crotch in his face.