Futures trading has a specific number of transactions, and the specific currency of the transaction is the same as the number of futures contracts. Converting dollars into yen belongs to the same transaction, so it belongs to futures.

Futures, whose English name is futures, is completely different from spot. Spot is actually a tradable commodity. Futures are mainly not commodities, but standardized tradable contracts with some bulk products such as cotton, soybeans and oil and financial assets such as stocks and bonds as the targets.