
Hyung, you should've held on tightly on that ice cream first. Time will come when you are hungry, diabetic, sad (because Eunho left you for a much more decisive Stud McMuffin), and broke, you'll need some ice cream but you can't have any... you'll think of the angels you mercilessly threw in the trash. They will mock you. Haunt you...

There is no Stockholm Syndrome happening but perhaps, would Lima Syndrome develop instead? Who knows?

He is already attached to his captive, I suspect that they were really close in Highschool, even possibly lovers or something similar, we hardly ever remember momentary childhood flings and that maybe what happened with the MC. He forgot and his captor is trying to force him to remember. Again this is my guess. So I don't think it's Lima syndrome when he was attached even before holding him captive.

There are no words to describe how much I like this. A clever, fearless, strong-willed protagonist uke in a seeminhly hopeless situation in a psychological yaoi... why aren't there more of this?
In KS, Bum is so powerless over Sangwoo and sometimes, his actions make me facepalm. Don't get me wrong. I like both Warehouse and KS, it's just our protagonist here won my heart.
Q: Your Sunbae caught you jerking off to your sleeping Hyung. What will you do?
a. Spontaneously combust.
b. Drop out of school and hide under a rock somewhere in mars forever.
c. Kiss his feet and be his slave so he doesn't tell anybody.
d. Rape him repeatedly and torture him psychologically.
Hyeonjo: Hmmm... nothing of these makes sense except for D?
....
Btw, hyung... you're a fucking snake. You ain't that hot.