@influenced_that japanese brands are my favorites by far.
Kiminori Morishita (!!!)
those are just a few and only the tip of the iceberg.
Japanese fashion is a niche industry, which means that you get more precise and adjusted clothes than basic stuff. That brings a low quantity and a higher quality in most cases. If you want to get into japanese brands and want to safe some cash, you better search for some Uniqlo collaborations. Jun Takahashi (Undercover) did many collabs.
I can also recommend the Antwerp Six.