
Spoiler big time for the upcoming chapters.. please don’t open my comment if you don’t wanna be spoiled.
Well… everything goes according to the present day timeline where sejin is asked to steal the document…. Which he doesn’t in the present but he does steal in the past… and now Ido feels betrayed and angry but he doesn’t let sejin go. Just completely stops interacting even those tiny interactions literally stop and sejin is just waiting to be thrown away….. but then Ido’s grandfather passes away and he goes for a funeral but his brother visits…. And he r*pes sejin (sejin goes into heat) and gives a suggestive response “so this is the gift Ido left for me at home” hearing this sejin looses any resistance… his brother knots and cums and leaves… like the big asshole he is. Sejin then calls his secretary and leave Ido’s house…. Now Sejin is broken and hurt and I think he tries to overdose on sleeping pills (not clear bc the MTL was confusing but he was taking shit ton of sleeping pills). He’s now having nightmares of ijung raping him and slowly it’s Ido who’s doing it and not ijung. About two days later Ido visits Sejin’s apartment and smells his brother's pheromones and see the bruise on sejin’s face from when he had slapped him and gets angry but sejin is gorgy and when Ido questions him he gives a vague answer “you know who it was” and stuff happens and Ido gets madder and r*pes sejin and unilaterally imprints him and knots him. Sejin faints only to wake up back at Ido’s room.
Ido is still ignoring sejin and sejin feels hollow and empty and about 3 days after all this he gets to know he’s pregnant. Unable to bear the humiliation and the way of his life. Sejin enters Ido’s study picks up the gun and sits down to k*ll himself. Just then Ido enters and is shocked to see sejin with the gun pointing to his heart. They exchange a couple of words and Sejin shoots himself and dies… so far this is what’s happening and it seems Ido also kills himself (but I’m not sure bc the mtl was confusing af. (⊙…⊙ )

Yep, that's exactly how it went. When Ido knotted, he also bit Sejin's nape so they bonded. After Ido brought Sejin back to his home, he kinda felt every emotions/feelings of Sejin and realised his resentment and other negative feelings toward him and that's why he ignored Sejin AGAIN UGH because of guilt or remorse I think? He was terrified when he saw Sejin with the gun in his study room and killed himself after finding out the baby is his and not his brother's.
I'm waiting until the flashback is done to continue reading this cuz i won't be able to handle the cliffhangers ┗( T﹏T )┛
I am just so sad… poor sejin. If each chapter is the adaptation of the novel’s chapter time line…. Then I’m really going to cry atp.