Mermaids

Kana, a pearl-tailed mermaid from a remote northern reef, attends the annual mating gathering alone, only to find herself the center of attention among the ocean's most formidable suitors—the cast of Haikyuu.

A carefree mermaid's song leads her into the forgotten kingdom of Ryomen Sukuna's sire, where an ancient, fated bond awakens between her and the predatory King of Curses.