I wonder if it's possible patch system menu or something in US/PAL Wiis to enable some japanese games show actual Japanese text, for example some Virtual Console games instead showing japanese characters it they show weird text.
AnyRegionChanger is an app that will allow you to set the Wii to use Japanese characters on a US Wii - I've done this for some games before but it won't work on every game for some reason.
But you need setup your region to japanese, it will affect the shop and whatnot, I'm thinking keeping my region to US while having japenese character support, I'm not sure if you can do that with AnyRegionChanger...
You can do that. You only need to change the language to Japanese for JP character support. You don't need to change it from USA for the console/game/shop regions for it to work. This does work as I did it on my USA Wii to play some JP games and the opposite on my JP Wii for US games.
Try it~