This story started as a misclicked draft, but I'll turn it into a short story.
Jiang Chun x Wen Sibai
When a fake white lotus stole Jiang Chun's boyfriend, Jiang Chun slept with her younger brother.
The younger brother is so innocent, he blushes at the drop of a hat.
The day she decided to sleep with Wen Sibai, Jiang Chun made a bold declaration:
So you're pure, huh? Spotless, huh?
Today you're white. Tomorrow, I'll turn you yellow!
In the end, Jiang Chun was no longer pure, and Wen Sibai was no longer white.
What's worse, with all that experience, Wen Sibai actually became a real expert in bed...
A short story about a psychological Casanova training an innocent younger brother to become a Casanova in bed.
Theme: I don't know.