Woojin left Taemin to replace his half-brother Siwoon (who was terminally ill) and become his father’s heir. Woojin standing beside the real Siwoon’s bed said I did it all for him, for Taemin. Woojin wanted money and power so he could stay beside Taemin forever. Woojin had Taemin followed and he went often to watch Taemin walking to work. He was about to tell Taemin his plan when the car accident killed Taemin’s body (with Siwon’s soul).
Soojoon wants to get revenge on Jiwook. Jiwook used Soojoon to hurt Siwon out of jealousy. Jiwook tore up Soojoon’s photo. Soojoon was going to get revenge on Jiwook but Jiwook sent Siwon. Siwon got messed up and attempted suicide. Soojoon didn’t want to be prosecuted and left Jiwook alone. When Siwon turned out to be okay, Joohoon got back in touch with Jiwook. Woojin later decides to work with Soojoon to make sure Jiwook never hurt Taemin again. They made up the blackmail plot to lure Jiwook to Soojoon. Soojoon altered the plan and got Taemin/Siwon to come also. Jiwook confessed. Jiwook now belongs to Soojoon.
Can someone PLEASE explain the ending to me i'm beyond confused !?