You can buy Muslim-friendly products at Don Quijote Dotonbori Midosuji Store
Don Quijote is a discount chain store representing Japan.
Don Quijote is popular for its low prices and services in the store full of entertainment, and many foreigners shop here as well as Japanese people. They provide services in many languages, and many travelers that visit Japan shop at Don Quijote. Of course, they offer tax free prices for travelers.