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"You are under quarantine." The deadly Lust Virus is shaking the world. In Touou University, there is a carrier. There is no cure. Those infected by fluid or aerial transmission go insane and die. My lips might be stolen by someone I don't even love?!
Chiharu isn't a girl who sees the point in things like romance. To her boys are just an annoyance, but what will she do when she starts to develop feelings for a boy at her school?