Zi Chu is the younger brother of Zi He, Hong Bo's former loyal bodyguard. He was a former doctor. He was framed in a medical accident and lost his qualification to practice medicine. It was related to the factional disputes in the hospital. His left hand was injured by the patient's family and he never had a chance to work on the operating table. He has lost his goal in life and is interested in observing any object or person that interests him. He is obsessed with hands and likes beautiful hands. Especially hands like Donald's
Donald is a lawyer raised by the Tinfily family. He seeks asylum from Mr. Hong for the declining Donallan family. In fact, he is an undercover police officer. His father is a drug dealer. Donalde hates drugs and regards Mr. Hong as a thorn in his side. He is also a father and brother, taking care of Tina. From using him to sympathizing with him, he fell in love with him.
Tina is the object of Donalde's protection, the last little princess of the Tiffany family. She likes and relies on Donald. After learning the truth about the death of her parents (Donald caused it), she collapses in the contradiction between love and family affection. She is a Lolita-style girl who loves Hello Kitty dolls. She is autistic and delusional. She fantasizes that she is Donald's lover and vows to marry Donald when she grows up. She hates Zi Chu and cuts up all the Hello Kitty dolls when she goes crazy.
Jennifer is Mr. Hong's old lover and the CEO of the hotel. She has sexual relations with his deputy Leo and security guard Jack, and has a strong desire to control men. Leo is a Chinese-American who became a hotel deputy because of his relationship with Jennifer. He is timid and scheming.