Also known as: メカニカルバディユニバース, MBU, MBU1
Post-apocalyptic science fiction setting by Kato Takuji (AKA Ishiyumi). Most stories in the setting generally involve a human paired off with a sapient robot character as their primary protagonists. The main story arcs are:
- The Story of a Droid
- Hawkeye in Love
- The Banshee Cometh
- Maid Would Want to Protect Her Lady
- The Story of an Manga Artist
- Apparition (originally unrelated horror characters who eventually became the main antagonists of MBU)
Currently serialized by Square Enix as Mechanical Buddy Universe 1.0.