Male Protagonist: There's a fuss
Heroine: It's so black
Male supporting actor: Gu Yuchen
Female supporting role: Chacha
The male protagonist likes the female protagonist, the female protagonist likes the male partner, the male partner likes the female partner, and the female partner likes the male protagonist. In the end, the female partner and the male partner finally get married, but the female partner still likes the male partner, and the male protagonist loves him and cannot help but eventually jumps off the building. Then the female protagonist realizes that she loves the male protagonist, and she also jumps off the building.
Intent: sand sculpture novel