The plot gets as wild as it wants, and the story bends over backward just to manufacture jealousy.
The heroine may look terrifyingly powerful, but in reality, she's just a lovestruck wife.
Not pure, and very much not innocent.
There's no fate, just biological compatibility.
Worldbuilding:
There is a Rose Island that gathers girls from all over, keeps and trains them, and turns them into succubi.
These succubi are sent out on quick transmigration missions, serving members of different ranks.
Member ranks:
Five levels: S, A, B, C, and D.
Succubus ranks:
Withered Petal, Wilted Stamen, Fragrant Bud, Full Bloom, and Golden Rose.
The setting is the far future. The plot bends over backward to manufacture jealousy, and otherwise goes wherever it pleases.
Niya is sent out from Rose Island to enter different worlds and serve employers of various ranks, completing missions. Along the way, there may also be subplots involving revenge, rebellion, and escape from Rose Island.