Somewhere in Tokyo, in an exclusive mahjong Club. Rei is a clerk in this club. Her job is to play Mahjong with the guests. Players will operate Rei and play with 3 guests in the authentic Japanese Mahjong. Dead wall draw and Last tile from the wall... It all depends on your skills!!
In order to retrieve the illegal property embezzled by the evil Lord, Ricka received a mission to capture the Lord. But it was a trap. She fell into a dungeon arranged by the Lord in advance. Although the demons in the dungeon are weak, the existence of various traps makes it difficult to escape!