I don't know how to write the content introduction. The central idea is that a boy and a girl fall in love.
Let me introduce the male and female protagonists below:
The male protagonist is set to be 26 years old, which is younger than the female protagonist, but I don't intend to write him as a person whose psychological age is more mature than his physical age. I hope that his character is a kind of internal and external unity. That is, when we talk about sister-brother love, first of all, it must be a love. Then we can talk about other issues. I like you because I like you, not because although I am young, I am psychologically mature. I just like the situation of someone older than me.
The female protagonist is set to be 33 years old. She and the male protagonist are in the age span of the 80s and 90s, but I don't intend to write her as a strong woman who wants to control everything. She has more life experience than the male protagonist. Compared with the young girls around the male protagonist, she may not be so silly and sweet, but in the eyes of the male protagonist, she will feel that she is actually just "silly" and quite cute.