My Girlfriend Has a Younger Brother. Coincidentally, I Also Have a Younger Sister.

When Song Ran confessed to me a few years ago, she said, "The first time I saw you, I felt that you were different from other boys." A few years later, she explained to me impatiently: "Jiang Jinyan is different from you. I just treat him as my younger brother." She has a younger brother. By coincidence, I also have a younger sister.