is the Akihisa's elder sister. 23 years old and a Harvard graduate in education. Has E-Cup breasts and is horrible at cooking, evident in Episode 9 when Yoshii finds all the attempted Paella dishes in the fridge and when all the band-aids are shown on her hand. Seems to have a huge brother complex as she really tries to seduce Yoshii into a kiss, reducing his allowance by her own volition such as deducting 100 for every girl that Akihisa encounters and blushes extremely red when Yoshii admits he loves her as a sister. She appears to harbor romantic feelings for her brother. Both her and her brother are complete opposites in terms of their skills, Akira is smarter and much more perceptive than Akihisa but is a terrible cook while Akihisa is an idiot but is a much better cook than Akira.
Kikuko Inoue (Japanese), Carli Mosier (English)