They have always lived next-door to each other, and have always walked to school together.ĭespite their closeness, Osana is quite rude and harsh towards Senpai she is always easily irritated and quick to anger when he is around. Osana and Senpai have been close friends ever since they were very young children. If Osana is eliminated peacefully, she will appear in subsequent weeks with a short bob haircut, in reference to her conversation with Senpai on Thursday before school. Her scrunchies, thigh-high stockings, and panties are salmon pink with white polka-dots, and she wears a red bow on the left side of her head.

Osana's current appearance includes orange eyes and orange hair tied into twin-tails reaching her knees, with the ends of her hair fading into a light blonde ombré.