However, after the two brothers met a woman known as Francine, Bai Jin's heart suddenly take a dark turn after he found out his older brother had married Francine despite Bai Jin sees her as her first sweetheart which caused him creating several tragedies that happened in the series such as the puppet that attack innocent humans--better known as Automata--or ZONAPHA Syndrome which is a disease caused by third party parasympathetic dominance.
Bai Jin initially appears as an average - built fair skinned young man with long black hair. He mostly used a set of brown robes covering most of his body and a dark greenish hood above his clothes. He was wearing black pants and darkened shoes underneath.
Due to his encounter with Francine and seeing his brother's apparent "betrayal", Bai Jin wears glasses and fell into the pit of insanity as the time goes on and his manic appearance in his late years as an old man is much more exacerbated.