Kirk here with information about a local (Arao) clothing manufacturer:

— start quote — Under the umbrella of Ichibo, LTD., IITO is a Kumamoto-based apparel brand that completes every step of its clothing manufacturing domestically – something fairly rare in the Japan of today. IITO has a “70-year history of spinning yarn,” crafting simple, understated t-shirts and hoodies with a high-quality, soft feel. Just like the concept of Fueki Ryuko, IITO strives to create clothing that is fashionable and yet never goes out of fashion. Their dedication to high quality is reflected in their brand name: IITO, or “ii ito.” (いい糸, “good yarn.”) — end quote —

https://unseenjapan.com/explore-japanese-minimalism-with-setsugekka/