天泽亚纪同名漫画改编，故事讲述主角南沙也加（中村安奈）15年来一直暗恋着青梅竹马鹭泽亮介（大谷亮平），因此不断拒绝其他恋爱关系，到了30岁仍是没有男性经验的处女。 　　然而某天她醒来后身边出现一个自称为町田翔平（古川雄辉）的男人，对方说和她交往同居中，自己还似乎曾经和他发生关系，同时她没有了最近3个月的记忆。在她寻回记忆的过程中，她开始于「野性甜美男子」鹭泽及「抖S傲娇男子」町田之间动摇，在因为失忆而重跑的人生中追寻幸福。

三十歲的沙耶香沒有戀愛經驗，多年來一直暗戀著亮介。一天醒來後，沙耶香的同事翔平竟然出現在眼前，更告訴她二人在交往並同居。沙耶香驚覺自己失去三個月的記憶，忘記和翔平之間的事，決心找回這段「戀愛記憶」。

Sayaka Minami works as a designer for a company. She is 30-years-old, single and has not had any love experience due to her 15 year unrequited love for Ryosuke Sagisawa. They have been friends since they were kids.

One day, Sayaka wakes up and a strange man is in front of her. She panics and the man introduces herself as Shohei Machida. He works as a salesman at the same company as Sayaka. He tells her that they are in a relationship and live together. Sayaka lost her memory for 3 months.

主人公・南サヤカは15年間の幼馴染・鷺沢への片想いをこじらせた結果、30歳にして男性経験なし。「自分なんてどうせ」と恋愛から距離を置き続けてきた。 そんなある日、目を覚ますと目の前にはサヤカの同僚で隣接部署の町田翔平の姿が…町田の話によれば、ふたりは付き合っており同棲しているという。 なんとサヤカは1か月もの間記憶を失っていたのだった。失われた記憶を取り戻していく中で、鷺沢と町田の間で次第に心が揺れ動いていく…

최근 3개월간의 기억을 잃어버린 30세의 여성이 현재 동거남과 오랜 짝사랑남과의 삼각관계를 이루게 되는 이야기를 그린 드라마

Sayaka Minami, uma mulher de 30 anos que não tem experiência em relacionamento, mas tem uma queda por seu amigo de infância desde os tempos de faculdade. No entanto, uma noite antes de irem a um encontro, Sayaka acorda na casa de seu filho mais novo do trabalho, e ela perdeu um pouco de memória.