Tae hee, shi hyuk, soo ji, se joo
This is one of my all time favorite drama. The plot had sudden twist and turns and I was always kept engaged with every episode. But I wanted to also share my opinion with why I preferred the trio more than the main couple.
First I don't want to say that Tae hee was what brought the group apart but more Shihyuk. I have read a good amount of reviews for this show and most blame Sooji for being so toxic or how Sooji and Sejoo caused the trio to break apart to the point of no return but looking at the threes past and family background you could see that they each had been shaped by these things and that made it to where they felt that they could only rely on each other and reject the rest of the world. So when Shihyuk said he was willing to go through with the plan of seducing Taehee and in turn with he began actually liking her, he lied to Sooji and Sejoo which I feel trigger Sooji to act out. I mean how would you react if you found out that one of the only people that you felt safe with and fully trusted lied to you.