Twenty Again
두번째 스무살 (original)
Facing major changes, a mother realizes it's time to live for herself and decides to enroll in college, where she finds her dream as well as new love.
Starring Choi Ji-woo, Ha Seung-lee, Lee Sang-yoon, Kim Hee-chan, Choi Won-young, Kim Min-jae, Son Na-eun, Park Hyo-joo, Jin Ki-joo, Noh Young-hak
Watch "Twenty Again" on Tubi TV released in 2015. It's a comedy and romance show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show, and is currently available to watch for free.