Yeosang was born on an 'cursed' day, June 15, 2001, as he would say it. He is 23. He is an INTJ and is trying to kill his twin and join his mother. He used to board the Boarding School for the Sick and Deadly (BSSD) due to his ASPD, and because he was a psychopath and sociopath. Due to stupid superstitions, his nannies back at his mansion think his red birthmark is a mark of Satan, but it's just a normal birthmark. He isn't really evil. Just misunderstood.