Reread 032824
MC Siwon/Yoo Taemin - poor lad who inherited his father's debt; his mother left him, and his abusive father left him soon after; he did not continue schooling and just worked just to be killed in a traffic accident; his soul got swapped to another human (Siwon) and vv; there, he got to live another life and met his long lost childhood buddy.
ML Siwoon/Woojin - bastard son of a rich man w a prostitute; he used to live in the slums w his abusive mother, and that where he met the the love/obsession of his life; he left the slums once he realized he's got nothing to protect Taemin, and became the dummy heir of his father (legit her is sickly asf); he discreetly stalks Taemin via third party stalkers to monitor MC's wellbeing; he rushed off to the hospital during Taemin's body's last moments on Earth.
Real Siwon - RIP; poor lad who'd been the target of inferiority complex of his lesser twin Jiwook; assaulted, abused and raped all the while being looked down by his twin; eventually killed himself by jumping on the traffic.
Jiwook - a very bad case of inferiority complex and main character me-me syndrome; needs therapy
Joohoon - one of the worse type of people to acquire power; abuser; likes to watch the world burn; needs therapy or juvie
At the End of the Road