BAGR-055 The bitchy younger sister, Amano Noa, who twists the friendship and tastes of her otaku older brother

A college-aged otaku guy starts living alone after entering university. His younger sister, jealous of her brother’s independence, begins coming and going from his room frequently. One day, she asks to borrow his room for a private meeting with a casual partner, but he refuses, saying a friend is coming over. Left in a bind, the sister decides to carry out a cruel and ruthless idea she suddenly comes up with. As she gradually pushes her brother into emotional distress, she awakens a sadistic side of herself. She mocks the sight of her brother, whose friendships have been ruined and who has been reduced to a submissive state.