偶然中,雪野的双重性格被同班同学有马总一郎(铃木千寻 配音)发现了。但是,有马总一郎并没有因此而厌恶雪野,反而渐渐的被这样的双重性格所吸引。这究竟是为什么呢?原来,有马也有着属于自己的秘密。有马出生于医学世家,性情温和成绩优异。这样的他总是能得到大家的目光,但这目光同时也带给了他很大的压力。为了维持昔日的完美形象,他不得不掩盖其他那扭曲的黑暗性格,这让他身心俱疲。这样的有马遇见了雪野,痛苦的他逐渐意识到,其实他并不用时时刻刻都带着虚假的面具,起码在雪野面前可以不必如此。彼男和彼女之间,一丝特殊的情愫正在慢慢生长。
根据台湾知名女作家郭良蕙长篇小说《心锁》拍摄。原著中因涉及叔嫂间恋情,有违中国传统礼俗而经台湾当局查禁,历三十年仍未解除。搬上银幕的《心琐》保留原著中大胆的描述而有更深入的揭露,将爱欲和苦闷、仿徨和挣
The woman next door; She became my exclusive special advisor. I will teach you the real skills to inspire women's enthusiasm! The so-called theoretical expert Seong jin only understands women through text, and whenever he sees his academic advisor Professor Mi ae, he feels excited. However, Meiai ignored his courtship and told him to come back when he grew up. He felt helpless and finally revealed his pain to the novelist Yang Hua who had recently moved next door. To his surprise, she said she would teach him about women and start coaching him on real-life courses from kissing to sex.