Awesome that you were able to complete it all in Japanese. As someone who’s also in the process of doing a Komiya binder, I’ve been having a really hard time finding the obscure “bulk” cards (basically everything past ex) in Japanese from big stores like T&T and therefore opted to only go all-Japanese for the original era. The rest is a mixed bag of English and Japanese, because English is way more available and cheaper.
Love the cohesion of your collection, though!
Btw, there is a dedicated thread on e4 for all the artist collectors if you want to check it out 
www.elitefourum.com/t/artist-collectors-of-e4-general-thread/32281/1