Hey! Sorry for the late reply.
Personally, I don't know much about this game, especially with there being no NA release, and there's not a lot of info online. I can make the game category and do some basic setup, but since you're (so far) the only one to run this, you would need to do the rest of the setup. I'll make you a mod for the game, of course, so you can edit/add/verify stuff.
Also, if I don't respond soon, just message me personally. Thanks!
-Mon
I completely agree that GM% and Any% should only count as IL records if they were attained during a full-game run as that's the only way to fairly compare and verify them. I'll make a note of it in the IL rules. Low% doesn't matter for obvious reasons.
Personally, I think the Japanese version should be classified as a different game(as it sort of is, with some fairly big differences to the Western version from what you described), so what I could do is create a new page for it. It doesn't seem like it has much of a benefit over the western version. Why not just play that? I will admit that I don't know a whole lot about the Japanese versions of Tenchu, though. I'll do some research on it when I get home from work tonight.
I would love to hear more of your thoughts on this for sure. I don't know nearly enough about the early versions of Tenchu to properly moderate them.