Mahjong Ghost Side Story: Tokaido Mahjong Unhomed

Mai, a university student, has an incredible memory due to an illness she suffered as a child. Her boyfriend Minoru, who noticed Mai's ability to remember everything in an instant, persuades her to use her special ability to play mahjong. Mai is reluctant, but she learns that Minoru has been losing a lot of money at mahjong and is in debt to a man named Akaboshi. Akaboshi sees Mai's ability and suggests that they make some money together.

Ryu travels around the country visiting mahjong parlors in search of a certain man. In one town, she is taken care of by Yoichi, the second-generation owner of a steel mill, and agrees to play as a substitute in a mahjong match to repay a debt to the yakuza.

Two sisters learn about the existence of their long-lost biological mother, but the younger is unable to accept the fact that she was abandoned as a child.

Mizuki, a female doctor working at a certain hospital, is immersed in the treatment of Aimi, a high school girl infected with SDX (Viral and Sexually Sensitive Disease). During the treatment, Mizuki realizes that SDX is artificially made. However, at that moment, Dr. Nakamatsu appears and begins a desperate game of survival.

Year 201X. Japan has achieved economic revitalization due to the legalization of betting authorized by the government due to the enforcement of the betting regulations. A gambling vocational school (commonly known as Tobasen) was established to train specialists so that they can compete with other countries even in gambling. Only the gambling arm can climb. Meanwhile, Mizuho and four female students are gathered in the classroom. They were some of the most problematic children in Tobasen. Then, the teacher tells me the startling test contents. If he wins, he will graduate as a gambling specialist. However, if he lost, he was stripped of all his clothes, and he was a mahjong undressing, breaking the rules that death sanctions were waiting.