Project A-ko is a 1986 Japanese animated science fiction action comedy film. The film focuses on 16-year-old Japanese schoolgirl A-ko, who defends her best friend C-ko, as they face off against their classmate and rival B-ko while the Earth faces the threat of an alien invasion. It was directed by Katsuhiko Nishijima with Yuji Moriyama did animation direction and character design. The film project initially started as part of the Cream Lemon series of original video animation, but later became its own film. The film staff said they were motivated to produce a fun exciting film in contrast to the more serious anime films being produced at the time. Additionally, the film includes a variety of references and parodies a number of other works of anime from the 1970s and 1980s.