@Sorshasan Part 4
Spoiler!
-Chairman Kim visits Inseop and gives him plane ticket for America. Inseop begins packing for America. During packing, he remembers the book that WY read to him (while he was in the hospital and when WY started acting cold). He looks for it book and sees that WY had folded the corner of the pages (as a bookmark). That night that Inseop called WY, WY was actually at Inseop's home. So this whole time, WY thought Inseop was cheating on him. Although WY knows that with Inseop's personality, there is no way Inseop can cheat on him, but he can't help feeling doubtful.
-After realizing why WY was acting cold, Inseop looks for WY. He borrows Kim's car and drives over to the villa. It is raining in this scene. The villa is by the water. He finds WY sitting at a bench near the water. WY tells Inseop that he's tired of him, Inseop sucks at s**, he's burdened by how careful he has to be around Inseop because of his health, etc. Inseop tells WY that he understands that it's scary that he can die at anytime but he loves WY and he wants to be with him until death. WY hugs Inseop and tells him not to die. Then they spend the night together . Story pretty much ends there