While it starts off dark, it still has a dark tone, but the interactions between mc and femc make me cringe.
It makes me cringe because this is a teacher and this is a student. While i do love age gap romances, this one feels more predatory than sweet. Like at first the femc did not like him, she just viewed him as any other person, however after the mc does some things that cross some lines, example being able to tell her bust size with his eyes, making some sensual comments about her, etc. These feel like grooming tbh, like he will whisper sweet nothings to her, increase the amount of physical touching he has with her, until she fools herself into believing that she is in love with him.
Not only that but there are also other characters who fall in love with femc
In all honestly, this feels like a hentai, but instead, the mc is a women and their harem consists of males, and instead of sex scenes, we get scenes that are very extreme in some aspects.
One comment said something about dengaki daisy, i would somewhat agree with that, like the tone is somewhat similar, but in both mangas, the mc feels less like a love interest but more of some predator
While i love age gap romances, when the mc is older and trying to put the moves on a younger girl with the purpose of getting into a relationship with the intent later becomeing to sleep with them or something, i just find it gross.
Manga where the mc just does their daily life and the female mc notice the things mc does and slowly finds him to be a good compangnion are the mangas i like (example being Koi wa Ameagari no You ni (After the rain) best age gap manga i have read currently)