Although Siyun Baek keeps his cheerful and playful demeanor, he becomes more aggressive, possessive and protective. He is seen isolating you from your friends to the point that you becomes afraid to go out with them.

Although he does eventually come around to letting you hang with your friends, he still remains extremely possessive over you. After attacking an idol who attempts to come onto and later attack you, he utters the words, “she’s mine” with a mentally deranged face. 