Cashback System: A Chance Encounter with Yang Mi from the Start

I've read so many mindless wish-fulfillment stories that they don't do much for me anymore, so I'm going to write one with a little more brainpower.

I don't know much, but I'll do my best to research things and make them reasonable, and to use the System from the perspective of an ordinary person.

I got a cashback System. Other people's Systems give them ten, a hundred, a thousand, or ten thousand times their money back. Mine only gives back half.

At least the System doesn't have many special requirements, like being a simp for beautiful women. With money, why worry about women? Who needs romance?

Since the System only returns half, and there aren't many requirements, obviously I'll go into business. All my costs are cut in half, so my competitive edge is no joke.

What should I do with all the money I keep making? Wipe out the Japanese, crush America, make Europe bleed. I'm the nation's destiny.