They sound  a bit like CM, they are only true Christians,home churches....

During the first papal visit to Japan last February, John Paul II pointedly embraced four Kakure who turned out to greet him and held a meeting with a number of the sect's chief priests. But one of those who greeted the Pope, Dominico Hayakichi Masuyama, 73, says they had come only to "register the fact that we exist. We have no interest in joining his church." After all, he adds solemnly, "we, and nobody else, are true Christians."

http://www.time.com/time/magazine/article/0,9171,925197-2,00.html