The Sumeragi House is the ruling house for the Sumeragi territory. They bear large similarities to Japan's traditional cultures and traditions.
Members
- Tasuku Sumeragi, the current head of the house.
- Koyomi Sumeragi, his wife.
- Itsuki Sumeragi, his son and the heir to the house.
- Erica Sumeragi, his daughter.
- Juno, the head maid for Erica.
