Dude, read the fricken names of the titles of the Oriental Adventure modules;
1. Swords of the Daimyo
2. Night of the Seven Swords
3. Ochimo, the Spirit Warrior
4. Blood of the Yakuza
5. Mad Monkey vs. the Dragon Claws
6. Ronin Challenge
7. Test of the Samurai
Come on. You're going to tell me that this isn't lazy? They're just recycling the most generic terms from Japanese/Chinese history and fantasy!
Like, look at a map of Kara-tur's not-Japan;
View attachment 121383
This is a joke. Telling me that these writers "did their research" when they're practically copying Japan wholesale is really rich.