What the... Hell, you're a cuning one.
Indeed, you just tricking the game without a cheat engine or whatsover.
Yeah, we don't need to carry over what's you have "earned". Not only it's not fun to do so, you can earn money by first finding all the place where money is hidden (closet next to the dojo, plants, bush etc...) then, really quickly when going fishing, digging, so you can buy the needed items for enhance your skills, strenght, and not the least, power of seduction (well, sort of).
Miura, the fisherman is "linked" to Aoi the frog girl. She's in love with him. What I don't get is why the Dev put the Sato/Yui conversations, and the first meeting with Miura in the gallery, and not the H-scenes with Yui, and the ones with Aoi.