main character Estelle: A bicycle courier in London, who witnessed murders one after another due to work factors.She is the ex-girlfriend of the owner, Miles. She met him and Pipa when they were in college. The three of them are the veteran residents of this house. Miles: The landlord and the heroine's ex-boyfriend, a successful stock analyst, is persuaded by his current girlfriend, Leah, to kick out his roommate, but at the same time he still misses Estelle. Pipa: A tall, bright and charming beautiful lawyer, she is a love expert who takes her male partner home for the night and plays with men in the palm of her hand.

Dalio: An idle vagrant who reached an agreement with the owner, Miles, to move in by repairing the house in lieu of rent. David: A carpenter and builder, handsome in appearance, gentle in temper and understanding, he is a peacemaker in the Gang of Seven. Owen: A handsome but mysterious and cold photographer, there is an ambiguous relationship with Estelle. Mike: Older than the other roommates, a taciturn veteran who has traveled around the world, but doesn't talk about the past. Leah: Miles' current girlfriend.He deliberately tried to drive the residents away so that he could turn this place into a nest of love, which caused a backlash from the roommates.Every time she showed up, she would inevitably fight with everyone.

Melanie: David's girlfriend, everyone calls her Xiaomei.Currently working in an art gallery, she has a quiet personality and is easily shy.