Where are they? Prepaid one use credit cards/VISA, MasterCard etc

When making purchases of Amazon Japan, I often use gift cards purchased from convenience stores.

Are there prepaid VISA/Mastercards? I haven't seen them. Where can you get them?

EDIT: I'm looking to converting cash and putting it into a prepaid or credit card, without linking to my bank account etc.

EDIT2: Thanks for the information about different services I didn't know about. ChatGPT gave a decent summary:

Given that you want to:

Use cash at a convenience store to load money

Use that loaded balance for Visa‑style online purchases

Kyash is probably the most straightforward overall: allows cash top-up via konbini, decent limits, and very usable for online payments.

Vandle Card (non‑Plus) is good if your usage is moderate, because it also supports cash top-up and gives you a VISA prepaid card. But its 1‑time and monthly limits are lower unless you use the “Plus” version.

Wise is not ideal for your “cash top-up at store” requirement — it doesn’t support that.

Revolut is also not suitable for cash top-up in stores, but is excellent if you fund via bank / card and want strong global spending ability.

by User09060657542