Japan clothing stores sizing

I’ve seen so much conflicting info on this so hope to get a good answer from people who have travelled to Japan before.

I plan on packing VERY light for our 3 week Japan trip in September and buying clothes over there. I love the Japanese street style clothing. But I’m worried I will struggle with sizes. I’m a 6ft male and 80kgs (175 pounds), so lean but tall for Japanese standard. Will I struggle finding clothes in my size do you think?

by Opposite_Guidance_12