Stockholm syndrome
I don’t think it is. One: flashback Kassan was interested in helping Igen when they were younger. Two: when meeting Igen as adults the first time thought he was attractive.
How it is implied if they meet and with no betrayals within the families they would had falling in love.
Since Kassan was attracted to at first that is not Stockholm syndrome.
3: Kassan would had told Igen about his brother’s plans and not keep things secretive. A person with Stockholm syndrome developments loyalty.
4: Kassan would not had stand up to Igen like he did so many times.
Looking it up and understanding Stockholm syndrome and knowing the symptoms of someone that experiences Stockholm syndrome doesn’t fit here either.
“A person who develops Stockholm syndrome often experiences symptoms of posttraumatic stress: nightmares, insomnia, flashbacks, a tendency to startle easily, confusion, and difficulty trusting others.”
While I understand your argument, the proof you mentioned was pretty close to the beginning. Kassan still had his familial ties during that time, hence why he probably didn't tell Igen. In addition, Kassan is super submissive, almost everything Kassan did (with exception to stabbing Igen) was based on Igen's will. As for Kassan falling for Igen first; Kassan wouldn't have fallen for Igen if Igen hadn't been "Flirting" or "seducing" him, if you want to call it that. The trait of seduction or flattery is quite common among predetors in the case of Stockholm syndrome.
As for Kassan not exactly fitting with the symptoms, I'd completely disagree. Kassan was having awful nightmares about his family and their reaction towards Kassan and Igen's relationship. Chances are, those nightmares probably caused insomnia, during those nightmares he was also having flashbacks to before he got kidnapped when he was with his family. As for confusion, Kassan seems a little...dumb...so you could probably write that off, and we never really saw Kassan interacting with many non-important to the plot characters.
But I'm not a phycologist nor have I read this webtoon in a while, so take what I say with a grain of salt.
OMG why this end!! I still don’t get it is bum will die or what ?? I’m completely shocked this was very