小石川 光希は、ある日いきなり両親から「離婚する」ことを告げられる。ハワイ旅行で出会った松浦夫婦と気が合い、母親がその夫と、父親がその妻と恋に落ちたため、お互いパートナーを交換して再婚するのだと言う。しかも、松浦夫妻の息子の松浦 遊も含めて、みんなで一緒に暮らそうとまで言い出す始末。そんな非常識な生活の中、一緒に暮らす遊に惹かれ始めていく。 <br /><br />(For Non-Japanese Viewers) <br />When you watch the video, please click the Gear icon "⚙ "in the top-right corner of the screen to access the subtitle options, then select your language if available. <br /><br />One day, Mitsuki Koishikawa is suddenly told by her parents that they are getting divorced. They explain that they hit it off with the Matsuura couple they met on a trip to Hawaii—her mother fell for the husband, and her father fell for the wife—so they plan to swap partners and remarry. To make matters worse, they even suggest that everyone, including the Matsuuras' son Yu Matsuura, should live together. Amidst this absurd new life, Mitsuki finds herself drawn to Yu, who now lives with them.
