Shinryaku Ika Musume, also known as Squid Girl, is a Japanese manga series written and illustrated by Masahiro Anbe. It revolves around the titular character, Ika Musume, who emerges from the ocean with the intention of taking over the world as retribution for the pollution humans have caused to the seas. With her squid-like features including tentacles and ink squirting abilities, Ika Musume seeks to instill fear among humans, but her plans are constantly thwarted when she ends up working at a beachfront restaurant run by the Aizawa sisters.

The series unfolds with comedic antics as Ika Musume adapts to life on the surface, learning about human customs and forming unexpected friendships. Despite her initial goal of world domination, Ika Musume’s interactions with the Aizawa sisters and other characters gradually soften her demeanor, leading her to question her motives. Through humorous escapades and heartwarming moments, Squid Girl explores themes of friendship, environmentalism, and the importance of understanding and acceptance between different species. With its unique premise and charming characters, Squid Girl has garnered a dedicated fanbase and remains a beloved addition to the world of manga and anime.