The two were childhood sweethearts. The male protagonist's family business had to be relocated abroad when they were young, so they met again when they were separated for six years in college. Because the male protagonist was four years older than the female protagonist, he never agreed to leave without saying a word. However, the female protagonist liked the male protagonist. In the end, the two of them ended up together. But the male protagonist has always liked the female protagonist, so when he was in college, his second major was the Department of Mathematics, hoping to have a common language with the female protagonist.
Intention: Well, I don't have anything to say.