Rika Saginuma (11) is a high school senior who\'s lost everything to a leg injury. By chance, she enters a chat room with 3 fellow members of her school, Nanaka Shimada (Polaris), a quiet girl whom nobody seems to notice Yumihiko Tsukumura (Mr. Money), a junior who feels his only purpose in life is to be useful, and Reiichi Katano (Jangalian), the biology teacher with an obsession for cute things. They quickly become unlikely friends, and begin creating a plan to blow up the school.

Alternate title:
Kanojo-tachi no X day
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Serialized in Princess Magazine
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US release by ToykoPop from 8-12-2002 to 10-14-2002