All the time honestly lol. I think anyone who watches enough anime naturally starts building their own worlds in their head. Mine usually ends up being some mix of dark fantasy and slice of life which probably makes no sense but it works in my imagination. The hardest part is always figuring out the power system and making sure it doesn't feel like a copy of something that already exists. That game idea sounds fun though, a cooking guy with a love triangle but he's just obsessed with food is actually a pretty fresh angle!