Are Kariyushi Shirts Only Sold in Naha?

So, I've been looking for a nice red shirt that is somewhat formal, but can also double as casual and I FINALLY found out about Kariyushi shirts (well, I found out about their name and that their made from different materials!), but I'm not sure where to get them.

I know there are a few places in Naha that sell them, but since we're staying on Sesoko-jima, does anyone know if the shirts are sold in Motobu or Nago?

Any help is appreciated, arigato goasimasu!

I do not know what they sell how much, but seems to be sold in shops Hotels and Busenaterrace of Nago.
http://www.terrace.co.jp/en/busena/shops/
http://www.majun-okinawa.jp/shopinfo/
In The Busena Terrace Hotel hotel selection, it seems to have also sold PAIKAJI not only MAJUN.
http://www.paikaji.co.jp/shop.html

Thank you, Haro!

Excellent that I now have some choices, closer to where I'm staying :)