《是谁偷走我的心》是一部日本电视剧，由本间欧执导，一色纱英和木村拓哉主演。故事围绕着单纯可爱的女生椎名裕子（一色纱英饰）对学长片濑雅人（木村拓哉饰）的暗恋展开，然而她的多次尝试都以失败告终，还引来了一系列的麻烦和笑话。班级迎来了转学生麻生早纪（内田有纪饰），她拥有美丽的外貌和冷漠的性格，与母亲的关系十分紧张。早纪心中暗恋着比她年长的小牧先生（美木良介饰），却发现小牧先生真正喜欢的竟然是自己的母亲。

在一次偶然的事件中，早纪戏谑地吻了裕子，这让裕子大吃一惊发现自己竟然不知不觉地迷恋上了早纪。与此同时，片濑也被早纪的神秘气质所吸引，一段复杂的三角关系就此展开。

椎名裕子一直是个单纯可爱的女孩子，对学长片濑一直暗恋着，为了接近他而不断尝试，却常常闹出笑话。然而当新同学麻生早纪出现后，裕子的生活发生了翻天覆地的变化。早纪性格独立冷漠，有着富有的母亲，但她经常不在家，使得早纪变得孤僻高傲，难以亲近。她暗恋着比她年长的小牧先生，但得知小牧先生真正喜欢的是自己的母亲后，陷入了痛苦中。

在一次意外的吻中，早纪戏谑地吻了裕子，让裕子大吃一惊，发现自己竟然不知不觉地迷恋上了早纪。与此同时，片濑也被早纪的神秘气质所吸引。三人之间的关系变得错综复杂，常常因为个性差异而发生争执。然而，随着时间的推移，他们逐渐成为了好朋友，青梅竹马的片濑和率直的麻生之间也产生了感情。

"Who Stole My Heart" is a Japanese TV series directed by Ou Honma, Sae Isshiki and Kimura Starring Takuya. The story revolves around the innocent and lovely girl Yuko Shiina (played by Saei Isshiki) who has a crush on her senior Katase Masato (played by Takuya Kimura). However, her many attempts ended in failure, and a series of troubles and jokes arose. . The class ushered in the transfer student Aso Early (played by Uchida Yuki). She has a beautiful appearance and an indifferent personality, and her relationship with her mother is very tense. Zao Ji had a crush on Mr. Xiao Mu (played by Ryosuke Miki) who was older than her, but found that Mr. Xiao Mu really liked her own mother.

In an accidental incident, Saki kissed Yuko jokingly, which To Yuko's surprise, she finds out that she has unknowingly fallen in love with Saki. At the same time, Katase was also attracted by the mysterious temperament of the early period, and a complicated triangular relationship began.

Shiina Yuko has always been a simple and lovely girl, and has always had a crush on senior Katase He kept trying to get close to him, but often made jokes. However, Yuko's life changes drastically when her new classmate Aso Saki appears. Zao Ji is independent and indifferent, and has a rich mother, but she is often not at home, making Zao Ji lonely and arrogant, difficult to get close to. She had a crush on Mr. Komaki, who was older than her, but she fell into pain when she learned that Mr. Komaki really liked her mother.

In an unexpected kiss, Saki kissed Yuko jokingly, making Yuko was taken aback when she realized that she was infatuated with Saki unknowingly. At the same time, Katase was also attracted by the mysterious temperament of early Ji. The relationship between the three has become complicated, and disputes often arise because of personality differences. However, as time went by, they gradually became good friends, and feelings developed between the childhood sweetheart Katase and the straightforward Aso.