Nanase, a beautiful gal, was feeling unsatisfied with her popular boyfriend's sex. She tried inserting Nozaki's penis as a dildo substitute, claiming it was for testing purposes, and became completely hooked on it. After having sex with him multiple times, Nozaki told Nanase that they wouldn't be able to meet for a while during winter break. Nanase, unable to satisfy her sexual desires with her boyfriend, was unable to contain herself as she anticipated her long-awaited reunion with Nozaki.