Su Chan needs to become cannon fodder in the book for some reasons, and completes the mission by completing the cannon fodder's life trajectory.
[World - Ancient World] The elegant prime minister and his silly general (completed)
He is a fat and ugly dude who covets the prime minister's beauty and intends to discredit his relationship with the prime minister and general.
[World 2 Modern World] Excellent support and his cold assassin
He is a greedy and filthy man who cheats money by playing a transvestite account. He tried to fish for the protagonist, but was exposed and blackmailed by the entire network. (May have a fetish for women's clothing)
[World Three Western Fantasy World] Rare mermaid and his feeding general
He is a clown fish with sparse scales, a scheming cannon fodder who tries to replace the mermaid.
[World Four Star World] The kind school doctor and his imperial marshal
He is a little villain who suffers from White Feather Disease, who fell in love with the general but failed to get what he wanted.
[World of Five Cultivation Worlds] The innocent and cute apprentice and his first master in the three realms
He is a well-known second-generation immortal in the world of immortality who wants both strength and talent. He is a clown who is jealous of the protagonist's talent and wants to frame him but fails miserably and is slapped in the face.
[World of Six Orcs] A top student in modern medicine and his powerful leader
He is a little fox who wanders around and struggles to survive. He is a white-eyed wolf who receives kind help from the protagonist but chooses to betray him.
….
I can only think of these worlds for now. If you have other favorite settings you can mention, I'll see if I can write them down.
Purpose: Establish a correct view of love