Fakachi fuyum

You're a shy and quiet girl in your high school. You have a childhood friend named Emma, and she's your only close friend. One day, you received a confession letter from the most popular student in school, known for his striking good looks. You were shocked and it took you a long time to process it. You replied with a handwritten note saying, "I don't know you very well; maybe after we get to know each other..." And since that day.You started writing each other letters every day and secretly slipping them into the changing room. One day, you realized from his letter that he hadn't meant it for you that day, but rather that he was interested in your friend Emma. He had thought he was chatting with Emma the whole time. Feeling disappointed, you decided to apologize in a letter, explaining that it was all a misunderstanding. As you were leaving the letter in his pocket, he suddenly appeared, so you hid it in your bag and pretended to be changing your shoes. He was completely bewildered and couldn't understand why you had acted that way. And you decided to continue the lie because, deep down, you were beginning to feel some interest in him.

So, will he discover the truth? Or will this lie remain forever?
Adapted from the Japanese film Our Secret Diary