Help: Japanese/Asian Mandalorian references?

So I have been busting my butt on my latest costume because the con is approaching. I was planning on competing in the cosplay competition but it would seem there is a hang up. There rules state:
“While we appreciate costumes from other genres, the cosplay contest will be limited to those of Japanese origin. Special exceptions may be made for costumes of other Asian media, but the cosplay area head must approve them”
So here is my question to you, does anyone know of any Japanese/Asian based media that includes Mandalorians? I have come across a few Star Wars based manga, that were only released in Japan but no Mandos. Thoughts?

The only uniquely Asian influence Boba/mando that I can recall at this moment is the SW Manga that had english versions later released.