《亲密姐妹》是一部日本推出的爱情剧。妹妹天真烂漫，自由奔放，姐姐认真笨拙，两个不同性格的人，相互伤害，却相互弥补对方的不足，两个性格相反的姐妹身上发生了许多麻烦与恋爱的事，其实妹妹却有一个不为人知的秘密，妹妹亦是一个小恶魔，或是一个小天使

女主人公姐姐叶月在区政府局居民服工作，即将迎来30岁的生日，原本打算和同在政府工作的男友结婚成家，过着平凡安宁的生活，然而一个不速之客，离家出走多年的妹妹突然闯进了叶月平静的生活，长相甜美，古灵精怪的妹妹，随时都会惹出很多麻烦，与姐姐因循持重的叶月有着不同的性格，无时无刻不挑战着姐姐的极限，妹妹可爱的脸蛋仿佛就是一颗随时会爆炸的定时炸弹，很快就搅黄了姐姐的婚事，妹妹心里隐藏着不为人知的秘密，随着两姐妹相处的时间不断增长，让姐妹俩的感情发生了微妙的变化。

"Close Sisters" is a Japanese romantic drama. The younger sister is innocent, free-spirited, and the older sister is serious and clumsy. Two people with different personalities hurt each other, but make up for each other's shortcomings. Many troubles and love affairs happened to the two sisters with opposite personalities. A well-known secret, the younger sister is also a little devil, or a little angel

The heroine’s sister, Ye Yue, works in the resident service of the District Government Bureau and is about to celebrate her 30th birthday. The working boyfriend gets married and starts a family, leading an ordinary and peaceful life. However, an uninvited guest, the younger sister who has been away from home for many years, suddenly breaks into Ye Yue's peaceful life. The younger sister's cautious Ye Yue has a different personality, challenging her limit all the time. The younger sister's cute face seems to be a time bomb that will explode at any time, which soon messed up her sister's marriage. A well-known secret, as the two sisters spend more time together, subtle changes have taken place in their relationship.