Responses
wtf dont ask that here. ask in the questions on the main page
Could it be this one?
https://www.mangago.me/read-manga/the_eve_festival/
it's "the eve festival" / "전야제"
I'm looking for a title. I'm not too sure about the details but It's about 2 students. One is being groomed by a teacher. When the relationship is found out the mother removes his son from school and they leave abroad. The guys separate for a few years until he returns and start dating again.