https://hrs-things.booth.pm/
Shop open! I have art books, acrylic charms, stickers, framed traditional art and much more!
I have limited quantity freebie stickers that you can get with your order too!

For shipping outside of Japan you can either use sites like Buyee, or just message me to directly buy from me.

[Edit]
oh look! A Ko-fi shop too?
If you just want to buy stuff without the hassle of messaging me, then here it is!
https://ko-fi.com/hr_bananabird/shop/physicalmerch