"underground" . "revival of Christianity" . "Secret Christians" . "went underground" . "\\\"Hidden Christians\\\"" . . "going underground" . "Japanese Christians of that time" . . "hidden Christians" . . "hidden Catholics" . "Christianity in Japan is repressed" . . "Hidden Christian" . "Japanese hidden Christians" . . "hidden Christian" . "Christianity in secret" . "due to them being Christians" . "Japanese Christians of the Edo Period" . "Hidden Christians" . "\\\"hidden\\\" Christians" . "Kakure Kirishitan" . "strictly forbidden" . "Kakure Kirishitan" . "continued to practice in secret" . "minority Christian population" . "kakure Kirishitan" . "Kakure Kirishitans" . "Christians of Japan had to go underground" . "kakure." . . "Crypto-Christians" . "Maria Kannon" . "early Japanese Christians" . "secret Christian" . "Japanese Christians" .