A Secret Class In Binding, Confinement, And Breaking In At The School During The Summer Holidays. Erena Takeda

We kidnapped the cutest baseball club manager in school and brutally raped her the hell out. 'Body fixation × confinement training × a youth that can't be told to anyone.' Elena, as the baseball club manager, is a school celebrity with her natural cheerfulness. In contrast, the three perverted guys from the library club were brooding. And then... they made the selfish decision to kill Elena, who is the girlfriend of the baseball club's ace...