Nothing is clear yet. Last known news regarding this was that police investigation is still going on. Park Hyesoo did film a movie but it seemed to be a previously canceled/postponed filming. You can't say she's innocent. Maybe the channel for Viki got deleted because the time is too long :/ It still says coming soon on iqiyi though.
"A passionate mathematics teacher at the prestigious private school develops an unusual bond with a troubled, underachieving math prodigy in her class, but vicious rumors of an inappropriate relationship between them leads to her summary dismissal. Four years later, now both adults, they unite to expose the corruption at the school that ruined her career and reputation as a teacher. "
From a summary of the webtoon that i found she will date bobby and break up because he fell in love with someone else. She will marry a guy named shin soonrok
Woong is a good example of how men and their pride ruin a relationship. He always cuts his sentences short and doesn't bother explaining further what happened. Yumi had every right to be disappointed when he kept giving her shortened versions of his answers to Yumi's questions. Communication is really important in a relationship and if there is no honesty it's bound to break. Shortened versions aren't going to cut it. You need to know the whole story. They weren't meant to be together.
this is probably a better summary