mechanical buddy universe
"Mechanical Buddy Universe" "MBU"
Official acronym: MBU
Post-apocalyptic science fiction setting by Ishiyumi (AKA Katou Takuji). Most stories in the setting generally involve a human paired off with a sapient robot character as their primary protagonists.
Four main stories are set in this universe:
1. The Story of a Droid
2. Hawkeye in Love
3. The Banshee Cometh
4. Maid Would Want to Protect Her Lady
In addition there is the Apparition story which technically takes in the same universe.
Ishiyumi's Twitter moments, collecting MBU content from all series: