The story tells about two genius female high school students in the 21st century, who came to this era where life is determined by the ability to play mahjong. One is Miyanaga Saki, a girl who can finish the game with a score of plus or minus 0 every time. The other is Haramura Kazu, a girl who won the individual group of the National Junior High School Mahjong Competition. Due to a chance meeting, Kazu was defeated by Saki's style of play that didn't care about winning or losing, and said to Saki, "You don't like mahjong." After being stimulated by this sentence, Saki aroused her fighting spirit on the one hand, and joined Kazu's school mahjong club in order to catch up with her sister. The two girls headed for the top of the mahjong world. "Genius Mahjong Girl National Chapter" (Japanese: Saki-National Edition) is a TV animation adapted from the manga "Genius Mahjong Girl". The content continues the plot of the 2009 TV animation "Genius Mahjong Girl", describing the story of Kiyosumi High School entering the national competition. Currently, the first season of the TV version of the National Tournament has concluded the second round of the lower half of the national tournament, with Kiyosumi High School facing Himematsu High School, Nagamizu Girls' High School, and Miyamori High School. The manga version has entered the third round.