is an action comedy crime film series written and directed by . The series follows two teenage female contract killers, Mahiro Fukugawa () and Chisato Sugimoto (Akari Takaishi) as they struggle to adjust to modern society. The series, distributed in Japan by , consists of three films and a twelve-episode television drama.
Films.
"Baby Assassins" (2021).
The first film in the series, "Baby Assassins", was released in Japan on July 30, 2021. The story follows teenage girls Chisato and Mahiro, who work as contract killers while living together as roommates in Tokyo. After their handler at the organization employing them instructs them to get jobs, Mahiro and Chisato struggle with fitting into society due to their propensity to resolve their social difficulties with violence. 
"Baby Assassins 2" (2023).
"Baby Assassins 2" was released in Japan on March 24, 2023. The film continues to follow Chisato and Mahiro as they are hunted down by fellow assassins and brothers Makoto (Tatsuomi Hamada) and Yuri Kamimura (Joey Iwanaga). The film's theme song, "Jyanaindayo", was performed by idol group Atarashii Gakko!, who also make a cameo appearance in the film.
"Baby Assassins: Nice Days" (2024).
The third film, "Baby Assassins: Nice Days" was released in Japan on September 27, 2024. Taking place in Miyazaki, the film follows Chisato and Mahiro as they become the targets of the bloodthirsty and zealous Kaede Fuyumura (Sosuke Ikematsu), who they must race to dispose of before he kills both of them.
Television series.
"Baby Assassins Everyday!" (2024).
A twelve-episode television drama series, "Baby Assassins Everyday!", premiered on September 4, 2024 on TV Tokyo.
Production.
All three films are written and directed by , and feature action choreography by .
Reception.
Robert Daniels of "The New York Times" regarded the first film in the series positively, describing it as "a colorful and wild blitzkrieg".