Adam's repentance

Adam Nishimura is a young man who was abandoned when he was a few days old to an orphanage. He always sought to discover what his true self was and the purpose of his existence in this great universe. Despite his loneliness, he always wished that someone would have sincere feelings towards him or be important to someone. He narrates Adam shows us the events of his life and its details, how darkness began to invade his mind and heart little by little, and how his life transformed from a person with a tender heart to a deranged psychiatrist who rips out the hearts of his patients under the pretext that it is a type of treatment and an attempt to strip all of his patients of all human feelings and make them mere monsters without feelings who carry out his orders. Which he was taking from the organization that he started working with when he was graduated from the orphanage, and he implemented it to the fullest extent and tried all the brutal psychological tricks on the patients without any of their families suspecting him... But what did Adam do in the end? Did he remain in his tyranny or did other events happen? An unexpected event happened that made him come back to his senses and find out who he really was... His mother was his quest from the beginning. Will he find her too? The difficult question remains: Did he do all of this of his own free will or is he just another victim of this accursed world?