This is the type of bullshit that turns away the reader. If she says yes, I'm dropping this. Give me a slice of life where the mmc and fmc do not end up together because of realism.
Age gap and profession.
Sensei is already the best out of everyone, even though she's given little screen time. Give me a fucking Botan situation. All the other girls are young and should be able to find a boyfriend. It's fucking high school. It's co-ed.