Chiaki

The stalker distorted Hyunsung's feelings and thoughts to make him develop a twisted sort of dependency on him, not to mention taking advantage of the fact that once a person becomes accustomed to something, having it suddenly disappear is bound to be disorienting. Add on to that his acting pitiful to manipulate Hyunsung's feelings to his favor and then you have a Happy Ending! This is just typical Yandere behavior and it's exactly what I signed up for, so I'm not surprised. That being said, I AM surprised that people in the comments seem to think that the stalker is actually worth empathizing with. I assure you that nothing excuses his actions, regardless of what his past was like.

Please don't take this fictional story to be an example of a what a healthy relationship is supposed to be like! Emotional manipulation, distortion, etc. is NEVER acceptable in a relationship and anyone who does that to you is someone you need to cut off immediately!
Σ(っ°Д °;)っ

I know he's just supposed to be a minor character but is he really going to be treated like a minor cannon fodder A whose scenes are done and whose fate is unknown now that the rebellion crisis is over?（/TДT)/