Mayuki started living with Yoshio, a fellow university student, after half a year of dating. One day, she learned that Nakata, a delinquent senior from Yoshio's hometown, had moved near their place. Yoshio had been bullied in middle school and couldn't stand up to his delinquent senior Nakata. Nakata took a liking to Mayuki and kept interfering with their relationship, trying to make her his own. He even planned a drinking party at Yoshio's house…
