A new collaboration featuring voluptuous bodies! Another hit NTR doujinshi manga by Maru Shin has been brought to life once again in this steamy live-action adaptation! Childhood friends Keita and Saki have grown up together, calling each other "Kei-chan" and "Saki-chan," sharing the same dreams of becoming swimmers. As they begin to realize each other as members of the opposite sex, they secretly harbor feelings for one another. When Keita makes the cut for the school's selection team, he plans on confessing his love to Saki. However, unbeknownst to him, Saki consults their senior, Miwa, about her own feelings. Little does she know that Miwa has ulterior motives, leading to her losing her virginity to the older girl...

≪肉感コラボ再び！≫丸新原作の大ヒットNTR同人コミックをまたまた実写化！幼少期から共に育ち、互いを「ケイちゃん」「サキちゃん」と呼び合い同じ水泳競技を志す慶太と沙紀。お互いの事を異性として意識し合い男女としての秘密の関係を持つ。慶太が水泳部の選抜メンバー入りを果たせば、自分に告白するつもりでいる事を知った沙紀は、先輩である三輪に相談するのだが、その話を逆手に取られ三輪に処女を奪われてしまい…。