After her stepsister, Tomoka, found her hooking up with their neighbor, Wataru, Fumie worries about whether she’ll have to hurt Tomoka’s feelings or deny her own. But to her surprise,…

Why is every girl Takumi knows acting so strange lately? His sweet neighbor Mizuki keeps getting flustered around him even though he’s known her forever. His new stepsister Saori is…

A mysterious plague is spreading through the school, making students and teachers alike uncontrollably turned on. Kazumi rescues his stepsister Tsugumi from a group of the sex-crazed infected, and together…