Jeongnyeongwangui Ttal

A South Korean high school student named Hae-Un goes to a swimming pool, gets pulled into a strange whirlpool, and passes out. Upon waking, she discovers she is deep underwater and encounters Ellime, who claims to be her father. Hae-In learns of her origin as the child of the Spirit King and a half-elf mother. She must now navigate and survive in this unfamiliar world.