ahhh rollback feature is for sure possible. At some point I'll probably figure out how to get it done in the next VN since that one's got a bunch of experimental stuff going on and then I'll pull the code over to this one after it's stable. That, and being able to save anywhere are two of the bigger feature requests for these VN's which makes sense
Oh you can save anywhere. When you play, every now and then a little notification should pop up that you hit a "checkpoint" and when you save and load, it'll load back to the most recent checkpoint. Not ideal I know, but the checkpoints happen pretty often so it works for now. When I say a save anywhere feature is in the works, I mean a true save anywhere system without these checkpoints and where the game will load in right to the exact line you saved at.