The Save / Load "cheat" I mentioned earlier, I found the LN I was actually thinking about. It is on Syosetu. It has a manga adaptation on Bookwalker too.
「俺の現実は恋愛ゲーム？？ ～かと思ったら命がけのゲームだった～」読んだ！ https://ncode.syosetu.com/n4565dq/ #narou #narouN4565DQ
"Is my reality a love game? What? ~ I thought it was a life-saving game ~"
The other WN mentions the possibility of taking lecherous action before the dude decides he's too kind to do that, but this LN / manga protag actually does cross that line. I don't know how I feel about that (kind of hoping he suffers karmically really badly later in this story for his actions). xC
