Compiler (コンパイラ) is a Japanese manga series written and illustrated by Kia Asamiya. It was originally serialized in Kodansha's Monthly Afternoon magazine from March 1990 to August 1992. The series follows two computer programs, Compiler and Assembler, who, after failing to take over Earth, decide to live with two human brothers while dealing with various enemies that are after them. A sequel series, titled Assembler 0X (アセンブラ０Ｘ) and focusing on the character Assembler, was serialized in Monthly Afternoon from October 1992 to June 1995.
The manga was adapted into a two-part anime original video animation (OVA) in 1994 by Kodansha, King Records, and Movic. It was licensed in North America by ADV Films. An OVA sequel was released in 1995.
Plot
Compiler (as in a source code compiler) features two girls, Compiler and Assembler, who arrived on Earth from 2-D cyberspace to play a "game" in which they will delete the real world and reform it. However, they move in with two young men called Toshi and Nachi and lose interest in the game. After Toshi is injured and the game is cancelled, two beings called Plasma and Compiler 2 are sent in to erase the girls.