The campus heartthrob professor everyone adores vs. the beautiful, youthful genius student
They begin with a mutual secret crush, then one makes it clear while the other keeps it hidden
Realistic, older man/younger man, teacher and student, happy ending, angst first, sweetness later
As a student, he had always been straight, yet somehow fell in love with his male teacher.
As a teacher, he fell in love at first sight, yet refused to admit it and kept everyone at arm's length.
They knew each other for ten years and missed each other for ten years, until a fingerprint that hadn't been deleted unlocked a secret buried deep in their hearts.
Anguish and happiness, all tangled together.
"Xixi, I was born this way. You're different. Doesn't it really disgust you?"
"It does, so I want someone younger."
"...You know about that?"
"Of course. It's a student's job to do their homework before turning it in."
"Don't forget, the work you hand in has to be graded by your teacher before you pass."
"That was before. Now..."
"It's still the same, as long as you still call me teacher."
So... the teacher takes the lead.
Theme: Follow your heart as you pursue your idol
It's super pretty, so sour and sweet.