As we can see at the end, he got a receipt, so what he asked for was probably a "written receipt" or an "invoice", so he could present it to the financial department of his company and get his money back. (Since he was stuck in the mindset that it was a gift supposedly on the company dime.)
I.e. he wanted a document clearly detailing exactly what he had bought (one (1) gift box containing xxx and yyy) so the bean counters could see that he had bought what he said he bought and not also something extra for himself or some even more blatant embezzling.
@Simpleton Ah I see. He was asking for a business invoice. I always ask for receipts so it really made me think "wait, does that mean I'm an old man already?"
@youdontknowwho Over here, if a store doesn't ask the customer if they want a receipt, that's a fine amounting to 100 000 Yen if a tax controller observes it. (Twice that if they are repeat offenders.)
So I don't have to ask for it, I just have to say either "oh, sure, why not" or "no please". XD
Man, I wish I could time travel just for the taxes alone. When I was a kid they were 5 times lower than they are now, it's crazy in my country. That 5% is looking better than the sweets.
I had forgotten that the main premise was that he had gone back in time...
For some reason, I thought he was an adult who got de-aged and he figured he needed to go to school to keep up appearances.
@Simpleton It was indeed quite weird the store owner gave him such a strange look for asking for a mere receipt, which he got anyway, as we saw at the end. I suppose the translator didn't catch the contradiction.
In the state I used to live in, Montana, there is no sales tax. A lot of people buy Bugattis and expensive cars in Montana because you can literally save over a hundred thousand dollars on taxes and other fees.