Sir, I want to write you a letter about the source.

Do you want to ask "sir, I want to write to you and tell you the source"? "Sir, the source of my letter to you" is a Japanese film "Love Letter in Spring". "Love Letter in Spring" tells the earliest online love story. The enthusiasm and openness of spring and the introversion and sensitivity of stars meet together by writing online forums and get to know each other better. With the further development of their relationship, the hostess said on the Internet, Sir, I want to write to you.