Two digital beings have three days left on Earth before their world gets deleted, and the show treats this apocalypse countdown like a love letter written in code. The mystery killer picking off the other refugees is almost beside the point, what matters is watching Compiler and Assembler scramble through the last hours, trying to confess feelings they've had no time to say. A 1995 OVA that knows exactly how much story fits in 50 minutes, and none of it is wasted on explaining what you already understand.
Compiler and Assembler were sent from a two-dimensional world to conquer Earth, but instead they settled into a happy life living with two ordinary 3D guys. Now the masters who dispatched them have given them three days to come back, or the council will wipe out Earth and everyone on it. Before they can sort out their feelings, a sinister double of Compiler begins erasing her allies one by one. To rescue her friends and protect the world she has come to love, Compiler must face herself in a showdown. Expect a one-episode sci-fi OVA that mixes action with comedy.