The Motomiya Household is the house Motomiya Kaitou owns.
- Motomiya Kaitou - kept the house after his divorce with Hironaka Yuzuno
- Motomiya Mao - left the house, but visited often. She ends up going back to live permanently at that house.
- Step-Mother - moved into the house when she married Motomiya Kaitou
- Motomiya Yui - moved into the house with Stepmother when Stepmother married Motomiya Kaitou
- Hironaka Yuzuno - left house because of divorce between Motomiya Kaitou