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 t...