Devoted supernatural wife

Huli jing

in others, especially in Pu Songling's stories, a fox woman becomes a devoted, clever, and sometimes tragic companion or wife, offering wit, loyalty, and supernatural help to a struggling scholar.

Mami Wata

she may take a human lover beneath the water, showering them with gifts in exchange for fidelity, sometimes leaving the person changed, wealthy, or emotionally transformed upon their return.