Interesting. Nice. So, now, who's going to demand custody of the found artifacts as part of their 'cultural heritage', or some such nonsense, and start threatening legal action? You know it's _bound_ to start happening.
Interesting.
That was before Tokukawa Ieyasu, the founder of Edo Bakufu(lasted until 19th century,) killed most of Roman Catholics. Some of them boiled alive in a hot spring. Once there were large number of Christians in Japan. The most notable example is Konishi Yukinaga, who was a rival of Tokukawa. He was killed, too. Jesuits, who originally brought Christianity to Japan, tried to help them anyway they can, but they were outmatched.
Only Dutch could maintain contact to Japan, after promising that they would be only concerned themselves with commercial trades, and won't push any religious agenda. Dutch was able to set up their trade outpost in a small island just off the mainland, connected only by a single bridge.