Katagiri Yuuji is a divorced, single, lazy gambling addict whose only real activity is playing Pachinko. He does it well enough to get by, but his life is more or less empty... until a young girl named Miura Satomi appears, who is a big fan of his. A classic story by Fukumoto about Pachinko, attraction, and the thrill of gambling.
(Source: MU)

Ukai Zero saves three troubled teens from a Suicide Website, and together chooses to work as 'Robin Hoods' of society. However, one of Zero's friends are caught by an organization he got in trouble with, and Zero is forced to enter a gambling competition hosted by a rich, rotten old man who is looking for talented gamblers to be his rep player. The reward money? ONE TRILLION YEN.
Resumed serialization as Tobaku Haouden Zero Gyanki-Hen on 7/13/2011 after a 2.5 year hiatus.

Morita Tetsuo's life changes when he meets Hirai Ginji, who works in the unknown and mysterious 'back world' of society full of villains.

This is part 2 of Gambling Emperor Legend Zero, picking up a few years after the cliffhanger ending of part 1.

In the aftermath of the disclosure game that won two Mahjong anomalies, the villainy "17 steps" game. Kazuya sets forth a gamble of 1,200,000,000! How will Kaiji survive?!