Monomania summary:
The popular "Ji-Woo", with her adorable looks and bright personality.
She receives confessions on a daily basis, but whenever she dates anyone, she inevitably gets dumped early on because of her tendency to obsess.
No one seems to understand Ji-Woo. But one day, a transfer student named "Lee Jae" shows up and listens to her story. Ji-Woo gradually falls for her and develops a strange possessiveness towards Lee Jae...
But where exactly does Lee Jae's true interest lie?