After losing everything, a man disappears into the crowds of Shinjuku and takes refuge in a small free mahjong parlor. With only loose change in his wallet, he makes one decision: survive. Inside, the tables are battlefields. Weakness is punished. Hesitation is fatal. Those who refuse to fight are erased. every hand is a test of nerve, deceit, and endurance. Survival may require becoming someone you never meant to be.

This is story about Saki author Kobayashi Ritz, who revolutionized the world of mahjong manga with her mix of "moe" and "mahjong".

Ginji is an aloof mahjong player who undertakes gambling matches with yakuza opponents and boasts of his unbeaten record. His true identity is that of a detective! What will happen in the game between Ginji, nicknamed "Lesser Emperor" who flies high in the autumn sky, and Shimura, the organization's rep player? The title story, "Ginyanma," as well as other stories by the genius Fukumoto Nobuyuki, are hardboiled romances about skilled mahjong players crawling in the underworld.

Gambling. Mahjong. Death. These are the themes of this fast-paced spy manga where outrageous life-or-death gambles are made daily occurrences and insurmountable odds are overcome. The most hardcore, action-packed mahjong manga you will ever see.

Okimoto Shun dropped out of college to become a professional mahjong player. He plays in the mahjong parlors of Shinjuku, where he encounters many formidable opponents. When the story kicks off, his primary mahjong parlor has just gone out of business, and he is looking for somewhere else to play. In the mahjong parlors of Shinjuku, Shun will play many games of mahjong with many different people, improving his game through experience!

"Senpai, please play me!” Isamu Asano spent his days alone in a corner of Sakuragawa High, absorbed in online mahjong. Then one day, his highly social underclassman Sakura Kamiya invites him to join the school’s mahjong club and he finds himself trying real, face-to-face mahjong for the first time. Confident in his skills, Asano expects to dominate. But whenever Kamiya-san sits in the kamicha seat, his specialty, calling tiles, stops working, and he can’t seem to get the upper hand at all. Is it the psychological tension unique to live play? Or is she reading his thoughts? As he wrestles with those questions, he gradually realizes that Kamiya’s presence is growing larger in his heartin this mahjong romantic comedy.

Sequel to the adventures of Kiriya Rinji whom, in order to acquire the large amount of money needed to protect his family, aims to become a rep-player in the underground world of Riichi Mahjong.

The next opponent (!?) is America’s tyrant, the 45th President of the United States, Donald J. Trump. And the one who will save Japan from crisis is… unbelievably, a high school girl of imperial bloodline (!?) blessed with the strongest DNA, Hako Mikado. Who will prevail the American tyrant or Japan’s teenage imperial heir!? And in the two-part prologue, a legendary, once-sealed phantom tile battle is revealed… Supreme Commander of the Allied Forces D. MacArthur clashes with Japan’s savior???!!

Bakuoka Danjuurou, a man who suddenly appeared in the world of mahjong, is a professional mahjong player who uses a powerful yet incomprehensible method that he calls "Explosive Tile" to break into the world of professional mahjong players. The professionals were initially repulsed by Bakuoka's absurdity according to conventional theory, but his continued unbeaten record soon became a high wall standing in the way. The same is true for Teppeki Tamotsu, who happened to get acquainted with Bakuoka when he was still unknown in the mahjong world, and was attracted by his strength and became a professional. Can the ordinary man, Teppeki, beat the genius, Bakuoka? Teppeki makes steady progress in his attack on the mysterious "Explosive Tile" technique used by Bakuoka, which at first seems impossible...

The 1980's was an unusual decade. The price of land skyrocketed, and the value of money went well above the norm. The numbers that defined the world all spun out of control, launching one of the largest bubble economies Japan had ever seen. For Mahjong, as well, it was an age that saw high stakes games on a scale unlike any age before it. And in this age, a man some call "Kai" lives as a "Mukoubuchi", what true, lone-wolf gamblers are called.

The Achiga Girls' Academy in Nara once defeated regional mahjong powerhouse Bansei High School. It advanced into the national team semifinals but lost to the eventual champion, and the mahjong club was later disbanded. Six years later, elementary school student Shizuno Takakamo befriends transfer student Nodoka Haramura. The two eventually enter Achiga Girls', but Nodoka transfers out of the school in the second year. When Shizuno sees Nodoka on television the following year as the national middle school individual mahjong champion, she decides to revive Achiga's mahjong club.

Hagakure An, a girl who doesn't know how to play Mahjong at all, was dragged into the world of rep-players by Yakuza, because she was mistaken for the Yakuza's rep-player, Daigo, whose appearance resembles her.

Kiriya Rinji is 30 years old, divorced, and unemployed. His only talent is playing online mahjong. Needing a way to make money to pay for child support, he goes to the seedy Kabukichou district to play real mahjong for cash. Will his online skills translate to real-life winnings?

At a prestigious girls' school, Sae, a shy high schooler didn't fit in with her classmates. Her daily routine during lunch break consists of playing her Mahjong game on her phone. Due to her hobby being maybe too old-fashioned, she kept it a secret, until she was found out by her class' charismatic rich lady, Chise! Will they with their diametrically different personalities get along through playing Mahjong...?