Sanomo High School, located in Okayama Prefecture, is a national tournament rival of Achiga Girls' Academy in the spin-off manga Saki Achiga-hen episode of side-A and its anime adaptation.
Club[]
Roster[]
- Girls' team tournament
- Nagi Shinmen (vanguard)
Tournaments[]
71st Inter High[]
- Main article: 71st Inter High School Mahjong Championships