Sawa Kawakami

When runaway teen Ju-Ju is embraced by a tribe of misfit youths in Kabukicho, she finds belonging for the first time — until betrayal and despair twist her haven into a prison, and she's left with one way to take back control.

School girl "Amano" falls in love with a school boy "Hayasaka", but he loves someone else. Amano's best friend, "Yoshiyuki", is opposed to her love. Hayasaka is a menstruophile, and he took all the used napkins in the school and ran away.