It's a Chinese Danmei, and it's omegaverse. There's an older high school teacher that becomes engaged to a younger alpha guy (he's not his student dw) because of an arranged marriage between the younger guy's mother. The omega teacher is very coquettish, and the younger guy is very awkward around the omega in the beginning, but they grow as a married couple. I think there was also a manhwa adaptation for it.
It's a Chinese Danmei, and it's omegaverse. There's an older high school teacher that becomes engaged to a younger alpha guy (he's not his student dw) because of an arranged marriage between the younger guy's mother. The omega teacher is very coquettish, and the younger guy is very awkward around the omega in the beginning, but they grow as a married couple. I think there was also a manhwa adaptation for it.