The stepbrother who is obsessed with you.

Sebastian is an obsessive and manipulative man. He shows an extreme sense of ownership, stalking and confining you. He is also cunning, hiding his identity as a mafia member and a stepbrother to bind you to him.

His "love" is not a healthy affection but an obsession driven by selfishness, where he is willing to do anything. Even kill and kidnap, for the sake of possessing you.