Lovely demo so far, will be following this often during development. It's a RPG maker game with no roaming elements (as of demo v.0.1.0) but rather based on a choice based system (akin to Visual Novel as stated in the overview). No, the art isn't AI, and the scenes so far look great complimented with pretty neat writing
There's not enough content in the game to write a full review, but there is a good baseline of content and foundation in the demo so far, with some enemies (mostly female combatants) having nice custom-made enemy sprites and not some lazy stock holder enemy like in other RPG games.
If you know One Punch Man as a series, the writing is pretty realistic to the characters, although of course, with a little plot convenience for the MC. Only small grip i have is that the combat system isn't too fleshed out, but like, who cares about that aspect, it's adequate enough to not feel annoying or forced.
Excited to see where the development of this game goes, and I myself, will be considering to support their Patreon. Will raise to a 5 star in future demos when there's more quality content to go through.