I also like a minimalist wallet but it's really difficult to do in Japan because they still heavily use cash everywhere and also have very VERY poor support for digital payment methods (like, not even debit)
I haven't paid the bills yet =P (yes we use cash to pay bills, wish i was drug dealer XD)
It's weird, every wallet i've owned magically somehow has a sticker stick to it, i've just always left them on. My old wallet actually had a sticker on it that i found out was actually on backwards for months (adhesive facing out) i flipped it over and it stayed on, was still there when i threw it out (i think i did anyways)
I originally got this wallet on kickstarter because it was supposed to support half folded cash but that didn't really work out, not that it mattered because CAD and JPY are both wider.
Here's a link for anyone interested
http://mostrad.co/