My hometown visit brought me back together with my high school sweetheart Tsukasa Aoi, a popular AV actress. We hadn't seen each other since our breakup four years ago. I wanted to confirm our love before we got married. As if taking advantage of my innocence ahead of tomorrow's proposal, she aggressively teases me, pushing us closer to crossing that final line. It isn't cheating because we both know what we're doing. That's why this taboo feeling just keeps building up. Our passionate, boundary-pushing sexual encounter continues well past dawn, leaving nothing but shattered desires and moral compasses behind...

地元へ帰省した僕は、別れて4年会っていない元恋人に連絡した。彼女の名前は葵つかさ。言わずと知れた人気AV女優だ。結婚する前に愛を確かめたかった。明日プロポーズを控える僕の甘さに付け込むかのように、つかさは積極的に僕を責めていく。今一線を越えても不倫じゃない。それを分かっているからこそ、この背徳感がたまらない。朝を迎えても終わらないギリギリシチュエーションの痴女性交に、性癖も倫理観も壊れていく…。