also back to highteen -
https://www.spottoon.com/book/18/BACK_TO_THE_HIGHTEEN
Bo-Young is 28 years old and still struggling to finish college because she can’t afford the tuition. After being unceremoniously dumped by the boyfriend she had supported over the years, Bo-Young gets the chance to get herself out of her stagnant life when she accepts a position to pose as a high school student for a year. All she has to do is avoid getting caught.
and moonrise during the day-
http://www.mangago.zone/read-manga/moonrise_during_the_day/
A man whose time has stopped, and a woman who flows like a river.
A story about strife that comes and goes in the past and present.
1. Cheese in the Trap - http://www.mangago.zone/read-manga/cheese_in_the_trap/
The struggles of a college girl - she tries to balance work/school/love.
2. Unstoppable Siblings - http://www.mangago.zone/read-manga/unstoppable_siblings/
My secret brother on lezhin. The relationship between the female prot/male prot and their friends is really fun. There's even a girl/girl crush/relationship! 60 chaps are free on lezhin. So go read there cause it helps the author. https://www.lezhin.com/en/comic/secretbrother
3. That Summer - http://www.mangago.zone/read-manga/that_summer_kim_hyun/
Another scanlation by translator-nim of Unlucky Mansions. It's a love triangle between two guys and a girl (it started with the two guys together).