Rei Kurushima, a second-year at Ryoha Academy, presents a cool exterior masking underlying shyness. This tsundere harbors a pronounced affinity for cute things, animals, and plastic model building. Her "Femme Fatale" class ability allows her to influence males through speech or contact, compelling immediate compliance; it does not affect females. Physically, she stands 163 cm tall with measurements of 86/55/86 and brown hair, her theme color being pink-red. She actively combats viruses threatening fictional worlds, participating in missions like entering the light novel "Mini Basket!" with Komachi Satonaka and Saori Rokugou to confront antagonist Maya in a basketball challenge, restoring the story. Rei belongs to the Rabbit Shed Shop group, operating from an Akihabara otaku shop, dedicated to preserving diminishing pop culture by entering infected story worlds to eliminate memory-destroying viruses.