Is this genre unpopular? I read manga too but so far only found 3. There're many time travel dramas, mainly travels back many many years ago but I don't see much drama that are like travel back in time to when you're younger and live your life again. Hoping if there're some more drama like this. I am watching Proposal Daisakusen now. Though I don't really like it when he go back many times and for a short while only (till photo taken).
Pro Dai is the best drama on earth! There is the "The girl who leapt through time"
To You Once Again, I Propose

He doesn't physically skip through time like in Operation Proposal, but his wife gets amnesia and it's like starting from square one. It gives off the same vibes as a time rewind.