large sizes

im a big guy, im about 6 foot 2 inches in hieght and have fairly big shoulders and unfortunitly a big waiste(38 inches), i usually buy extra large clothes when im in ireland.
My question is, how difficult will it be to buy clothes in japan? and i take a size 13uk shoe, will i be able to find footwaer that fits me.
thanks

Shop at the GAP.

There are some big people in Japan but not many.

My husband, 6'6" and same waist size as you bought a few t-shirts in Japan that fitted him, just at ordinary shops. Didn't look at pants or anything, that might be harder but not impossible I'd say.

There is also a shop that specializes in big shoes, just near JR Gotanda station.
I also recall seeing a big clothes shop somewhere around Yokohama, not far from Yokohama Park stadium.

There are some big boys in Japan also, but if you have problems in your country, I'm sure you'll have more in Japan. I don't think your size is extremely large.