Iron Tile Jan! VR

When Jan learns of the existence of the mysterious man who drove his grandfather to suicide, he teams up with his former rivals, Wang, Suguru, and Kanna, to hunt him down.
However, Jan is framed and accused of a murder he didn't commit.
In order to lure out the mysterious person and prove his innocence, Jan and his friends start a mahjong VR tournament at Japan's largest theme park.