Yankhei's manga / #Threesome(3)

This was a good story and although the couple has a very strange start the endgame is nice. The MC does show very possessive and obsessive tendencies but keeping in mind their circumstances its not that dramatic. The story has a lot of consensual s&m sex with the use of safe words. ———— MC Hajoon walks in on his crush and university professor afterschool. Professor Seo invite Hajoon to engage in s&m with them ?! Will Hajoon be able to use this to get closer to his crush?? Or will Professor Seo only get in the way?

I am going to reread this so many times!