[suishinshi]

How about Shusaku Endo?
He was a Christian since forever since be baptized when he's a child, and he wrote a lot of novel about Japanese christian,
if you want to know about Japanese Christian, I recommend to try to read his novel once.
Especially " The deep river"
is by far the greatest and marvelous novel I think.
the other novels, his typical novel is "Silence"
in japanese, "Chinmoku".
if you find them, please read it.

They must be useful to understand about Japanese piety.