The $2 million tournament, which will be held from May 8th to 11 at Caledonian Golf Club in Chiba, is part of the Asian Tour's LIV-backed International Series and LIV's first foray into Japan.
"There is no doubt that Japan plays a key role in the global golf ecosystem," Cho Minn Thant, commissioner and chief executive of the Asian Tour, said.
"We are confident that this new event will not only exhibit world class golf in front of Japanese fans, but also showcase Japan to our global audience."
LIV Golf Korea takes place on May 2nd - 4th.
LIV has fractured the sport with vast pay packets and lured many top players away from the PGA Tour.
The PGA Tour, LIV Golf and their Saudi backers, the Public Investment Fund (PIF), have been in protracted talks in a bid to reunite the sport.