Basically the current season is when they meet again years after they broke up, with Dohu works in production team and Juheon has become an actor. Dohu still very much has feelings and tries to win Juheon back, while Juheon just hides his emotions and shuts down his whole communication, refuses to hear, believe or thinks anything because of his trauma and fear due to his past*cough* still rude af. Juheon has a plan to destroy everything his aunt has tried to manipulate him into, even if the cost means himself also is destroyed. Dohu pushes a lot to convince Juheon and help him from troubles, while he is literally a walking dead with severe imsonia (probably depression too) and lack of eating. All of the tension, fighting, events have led to the current, where Dohu just collapsed during a fight with his highschool bully (now Juheon's fellow actor on a project) and now Juheon suddenly hear from doctors that Dohu might suffer more than he could imagine.
Just a warning for any babe confused or wanting to jump into this: you gotta have a heart of stone and the top (seme) is a huge black flag. The uke - bottom - is the gorgeous blonde, and the black haired boy - the seme is obsessed with him. That obsession is very twisted as his "love" is to see the bottom crumbles, to see the proud, beautiful, confident and brave uke lost it all. Seme comes from yakuza family, so dude put pressure on his friends, threatens on his single mom, and basically force uke to be SA-ed by himself as well as his underlings. So yes, I'm saying there is grape and super unconsensual, no romance feelings from uke to seme so far (and in the long future I hope). Seme doesn't give a damn if uke is grape by others - and I think he initiated that a bunch - because again, his so-called love is pulling the shining person down to the mud with him. I heard some theories on the seme having to "serve" customers too due to their family business, thus he also wanna drag the uke down, and that is his "love". The uke's personality and beauty really makes me adore him, but for my sanity, I did take some time off from this series, so read at your own risk.