There are always one or two obscure, short-lived cannon fodder characters in novels, who for one reason or another become cautionary tales along the protagonist's path.
Whether they die in a car accident, are struck by an arrow or stabbed, or take the blame and get thrown in jail, in the end they never escape their fated death.
Yutu isn't one of those cannon fodder characters, but her mission is to save them, or rather, to accept invitations to dispel the obsessions of selected cannon fodder. So she transmigrates into a minor cannon fodder character by their side.
The younger sister of an early-death cannon fodder character in an apocalypse novel
The wife of a cannon fodder character implicated in an ancient-era exam scandal
The older sister of a cannon fodder character who gets jailed after a life-swap
A mother in the interstellar era whose son has been implanted with insectoid genes
