70th Inter High School Mahjong Championships

The 70th Inter High School Mahjong Championships (第70回全国高等学校麻雀選手権大会) is the 70th edition of the All Japan High School Mahjong Tournament championships.

Team tournament
Teru Miyanaga led Shiraitodai High School of West Tokyo in defending its national title. Senriyama Girls' High School reached the final but ended the match with the lowest score, earning it fourth place in the championship. Led by Komaki Jindai's performance, Eisui Girls' High School reached in the finals, which earned them a top 4 seed in the next Interhigh. Himematsu High School lost their seed due to this.

Koromo Amae of Ryuumonbuchi High School of Nagano was named the MVP of the tournament, and set the record for the most points earned. In her first match, she knocked two schools below 0 points. In the quarterfinals, she surpassed that by busting out all three opposing teams. In the semifinals, Ryuumonbuchi played against Rinkai Girls' High School of East Tokyo and Gappo Girls' High School. In the vice-captain match, Touka Ryuumonbuchi entered her "cold" state due to the power of the opposition. Rinkai's Megan Davin was afraid of her, and decided to attack Gappo Girls' instead of Ryuumonbuchi. Davin busted out Gappo Girls', ending the match with Ryuumonbuchi still in third place. This resulted in Ryuumonbuchi being knocked out of the tournament, and they never got the oppoturnity to face Shiraitodai.

Individual tournament

 * 1) Teru Miyanaga (Shiraitodai High School, West Tokyo)
 * 2) Kei Arakawa (Sangamaki High School, North Osaka)
 * 3) Satoha Tsujigaito (Rinkai Girls' High School, East Tokyo)
 * 4) Mekaru (Makabi High School, Okinawa)
 * 5) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Mekaru (Makabi High School, Okinawa)
 * 2) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)
 * 1) Yuzuki Terasaki (Imizu Integrated High School, Toyama)

Trivia

 * The exact format of the team tournament is unknown. If it was the same as the one used in the 71st Inter High School Mahjong Championships, then the three matches Ryuumonbuchi played are necessarily the first round, the quarterfinal, and the semifinal. But if the format was a different one with more matches, then the rounds in question could be different as well.