East Chikuma High School, located in Nagano Prefecture, is a regional rival of Kiyosumi High School in the Saki manga and its anime adaptation. They faced off against Kiyosumi during the first round of the prefectural tournament. They did not advance past the opening round.


Hitomi Munesue is the president of the mahjong club.


Girls' team tournament


Nagano Prefecture qualification

Main article: Nagano qualification for the 71st Inter High School Mahjong Championships

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