Dammit man, such a good concept that we pretty much never see, but as soon as I see the Sandbox + RPG tags together, my excitement immediately evaporates. Like, an RPG-M sandbox RPG game can get me interested, because that style of game fits better in that game engine.
However, paired with Ren'Py it's almost always the most boring, grindy, and jarring snooze fest imaginable.