I miss the time when my crush turned into love in high school.
The male protagonist is a hindsight type.
In high school, I was indifferent to the heroine.
The heroine is a girl who is as quiet as a virgin but as active as a rabbit in a shed.
The male supporting character appears in college, and the story begins when he was in college, mixed with the heroine's high school memories.
As for the female supporting role, she doesn't have many roles. She only appears once in high school and once when the male and female protagonists get married.
Well, that's probably it. I'll wait for the rest to think about it slowly, and then it's starting to take shape.