Bride of the River God (2021)

Both are short dramas in which the ML is a water god who falls in love with the human FL.
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Both have a water god in love with a mortal woman. Both FLs are fated to die or be sacrificed and the ML is trying to save them.

This is the Korean version of the same story with more twist and plots. it has 16 episodes of 70 mins each starring Shin Se Kyung as Yoon So Ah (female lead) with
Nam Joo Hyuk as Ha Baek (River God).