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Masahiro Anbe's Squid Girl, Atsumare! Fushigi Kenkyū-bu Manga Get Crossover 1-Shot

This year's 10th issue of Akita Shoten's Weekly Shōnen Champion magazine revealed on Thursday that Masahiro Anbe's Squid Girl (Shinryaku! Ika Musume) and Atsumare! Fushigi Kenkyū-bu (Assemble! Mystery Research Club) manga will have a crossover one-shot chapter titled "Shinryaku! Fushigi Kenkyū-bu" (Invasion! Mystery Research Club) in the magazine's next issue on February 12. The one-shot's story will start with the members of the Mystery Research Club going for a beach trip. The one-shot will have a color opening page.

Anbe launched Squid Girl (Shinryaku! Ika Musume) in Weekly Shōnen Champion in 2007 and ended the series in February 2016. The manga received two 12-episode television anime series adaptations. The first season premiered in 2010, while the second season premiered in 2011. Crunchyroll streamed both television anime as they aired in Japan under the title Squid Girl, and also streamed two original video DVDs. Media Blasters licensed both seasons, and it released the first season on DVD in 2011, and in a complete Blu-ray Disc collection in 2012. Sentai Filmworks later rereleased the series on DVD and Blu-ray Disc in 2017. The series is also streaming on HIDIVE.

The comedy manga follows a Squid Girl who vows to invade the beaches of mankind since humans have polluted the seas. However, her invasion is less than successful, and she ends up on dry land.

Anbe launched the Atsumare! Fushigi Kenkyū-bu (Assemble! Mystery Research Club) manga Weekly Shōnen Champion in September 2016, and ended it in July 2024. Akita Shoten released the manga's 20th and final compiled book volume in October 2024.

The manga centers on Daisuke, who enters high school as a directionless student. A chance encounter leads him to join his school's "Mystery Research Club," which counts three bizarre girls as its members. Together, they search for and get involved in various mysterious or paranormal events in their town.

Anbe launched the Akuma de Fukei! manga in Kodansha's Weekly Young Magazine in February 2025, and ended it in September 2025. Kodansha released the manga's third and final volume in December 2025.

Source: Weekly Shōnen Champion issue 10 and website