A masochistic training drama where the insecurities of a big-breasted schoolgirl intertwine with men's desires. With her G-cup breasts constantly on display, the timid girl is perpetually watched, tormented by anxiety and guilt. Whenever any problem arises, she blames herself, growing increasingly nervous and submissive. An absurd turn of events begins when she confides in her homeroom teacher. Comprised of five chapters, this work deeply explores the themes of big breasts and domination.