My nephew Ryota was staying at his uncle's house while attending college in Tokyo. Although he knew it was temporary due to school, being able to live with his first love, his aunt, made him feel more than enough happiness. However, as their happy days continued, he started feeling unsatisfied. He longed to touch her more intimately and wanted a closer relationship. Hungry for fulfillment, Ryota decided to try masturbating using his aunt's fresh panties... but unfortunately, she caught him red-handed.

都内の大学に通うため叔母夫婦の家に下宿させてもらっている良太。大学にいる間という期限付きではあるが、初恋相手の叔母と一緒に過ごせるだけで十分幸せを感じていた。しかし幸せな日々が続けば続くほど、物足りなさを感じ始めてしまう。もっと叔母と触れ合いたい、もっと親密な関係になりたい。満たされない欲望に飢えた良太は叔母の脱ぎたてパンティで下着コキに挑戦するのだが…運悪く叔母に見つかってしまい…。