Not a lot of people know that one of the most talented and ruthless Mahjong players in the city is a young high school boy. Kei is a teenager of few words, but his observation skills, unwavering will and experience in the game allows him to survive in a world full of powerful, rich and dangerous characters. Kei is currently hiding a girl named Amina who has entered the country illegally and protecting her from being deported. He spends his days sleeping through class and his nights playing high stakes Mahjong, waiting for when a worthy opponent arrives.
The story is set in Hiroshima Prefecture's Onomichi City, where a high school student Nashiko Jippensha was kicked out of her house. Without a place to play with her friends, she learns that the mahjong parlor that her father used to run is now vacant. She fixes the mahjong parlor and turns it into a place where she and her friends can have fun, cook, have tea, and sometimes play mahjong.
The future of Marguerite, a brilliant student in Mathematics at the prestigious Ecole Normale Supérieure, seems all planned out. The only woman from her year, Marguerite is finishing a thesis she has to present to an audience of researchers. On the big day, a mistake shakes all her certainties and all her foundations collapse.
Can exercise sharpen the brightest minds? In this ground-breaking experiment, four world-class gamers, competing in eSports, Chess, Mahjong and Memory Games, put this to the test.
Namba Hiryu was captured by Kisaragi-kai, a group of villainous sparrows who are opening dark gambling venues at hot spring inns nationwide! Mashiro, a daughter who learned mahjong from Hiryu when she was young, challenges the Kisaragikai with Chiko, who was the leader of Hiryu, in order to protect the public bath at her parents' house! Mashiro and his friends struggle with the sneaky mahjong of the Kisaragikai, but when they enter the hot springs and their bodies get hot, the mahjong becomes stronger! ?? Can Mashiro and Chiko rescue Hiryu without losing the peeping of Ishiwa's toothed turtle and the strip mahjong confrontation with Ito's black panther? ??