Activate the Portal to Become a Villain in Both Worlds, and Become Rich in Myth

[Traveling through different worlds, plane trading, making money, daily life, multi-racial and multi-heroine, no pulling, pay attention to traffic safety] A mysterious portal opens the code of wealth in two worlds! I use the knowledge and technology of another world to exchange everything here. I "rescued" the noble girl in distress, I "protected" the hunted alien girl, and I "helped" the desperate princess. They regard me as their savior and willingly gather under my command. They don't know that what I sell is not only products, but also a set of rules that subvert the world.