GAJK-029 A schoolgirl is tied up and trained in the storehouse. Her stepfather disciplines his daughter, who has a cosplay hobby and is naive about the world, with insidious and obscene rope training every day... Miku Arima

Since her mother passed away, Miku has been living a modest life with her stepfather. One day, she gets into an argument with her stepfather over her future. Miku dreams of going to Tokyo and becoming a cosplay idol, but her stepfather tells her to stop dreaming and that the outside world is tough. The argument goes nowhere, and Miku finally decides to run away from home. Her stepfather can't bear to see her go, so he drags her into the storehouse and tells her to come over. "I'll teach you the fear of being an adult..."