I was revisiting Undertale and I remembered that there was a novel with that power and I was wondering if there were any more novels that have that power.
What to Do When I Become a Koi and Fall into the Male God’s Bathtub I've never played that game, but MC can create save points
NEET Receives a Dating Sim Game Leveling System He uses it a few times up to chapter 800+... though it was mostly life or death situations or something going awfully wrong and not trivial nonsense. The story has been on hiatus since QI couldn't be bothered to carry on with it. C'est la vie. It's a pretty JP like CN novel