Synopsis

Nube's class heads to a small island for a beach trip, but an old local tells them a creepy legend: there's a sea spider living in the waters nearby, and when it reaches 200 years old, it transforms into a man-eating monster. Yukime's curiosity gets the better of her and she decides to investigate whether the legend is real. Then a mysterious girl shows up on the beach with an oddly magnetic charm that immediately captivates Hiroshi. After she appears, weird stuff starts happening—Kyoko and their teacher Ritsuko get attacked under bizarre circumstances. As more strange events unfold, it becomes clear that the girl isn't what she seems, and the sea spider legend might actually be true.

Content compiled by AnimeList.moe from publicly available sources.

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