Honestly, with that missionary as the leader, creating a peaceful Christian community with respect for the Oda government would actually be viable. Luis appears to be the good type of missionary, only trying to spread his religion without exploitation or political motives. On that political...
This introduction of a basic form of representative government will be a boon to the community. It will help Dias make the most suitable policy decisions for each respective group in his fief. Obviously this isn't a straight up democratic form of governance, but it will certainly help the fief...
I do hope Ashimitsu warns them of how terrible these weapons they seek are, and that bringing them around like this is liable to start a conflict like the world has never seen yet. A Great War.
@TheElusiveTaco Not only do you scanlate stuff for us who cannot read the moon runes, you also choose the most wholesome gems ever! You even get permission when you can! Many thanks from a lowly lurker peasant.