An innocent love triangle set in the senior year of high school. The protagonist forged an innominate love letter to his best friend as a practical joke. The friend took the love letter seriously, and it affected him greatly. To help his friend get back to normal, the protagonist asked the Hongying, a girl who he secretly has a crush on, pretending to be the author of letter. Ultimately this idea backfired, his best friend suffered from a nervous breakdown and lost his opportunity in the University Entrance Exam. After graduation, Hongying confessed she first agree to help the protagonist because she liked him. However, she gradually realized after getting to know him that she was only in love with the idea of him from a distant. While the protagonist is handsome and kind, he was too coward to confess to his best friend about what the truth about what he did.