Chio's School Road Vol. 6 (manga)

Come now... You weren't thinking of using that shitty game to conform, were you?
Chio and Manana's friendship is on the rocks, and Momo-senpai's love life hits the skids. Even Bloody Butterfly makes an appearance in the flesh. To top it all off, Chio has another fateful encounter with biker boy Andou, but is there enough room in his sidecar for Chio?! Not if his little sister has anything to say about it! Chio's road to school goes off-course again!