PSVITA Software BELIEVER!
Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
"Once in a thousand years, the door of a different world is opened, and the strange men do not appear.
But when the world is in crisis, they are saved by the legendary guardians of Koshi and Koshi -"
As the tradition has been handed down through thousands of years of history, the door of a different world is suddenly opened, and the strange men appear before the high school students who have spent their days in peace.
They follow the fate of the guardians of Koshi and Koshi and decide to fight to save the world.
"Don't worry. It's our mission to protect you."