I normally don't shop at Don Quijote but when I do, I always hear its Miracle Shopping theme in my head: https://yewtu.be/watch?v=FSCGDkXvyzg

That's probably due to them playing that on a loop during their grand opening back when they rebranded from Daiei. I was living nearby at the time and that was my primary grocery store.

It probably doesn't help that I've been listening to its instrumental on loop: https://yewtu.be/watch?v=lgKBhaJdTOo