Look, this type of premise (Second Chance/time loop/time travel) is like my guilty pleasure, but this first chapter and the synopsis couldn't have been more barebones.
This is easily one of the most generic Second Chance premises I have ever seen. Literally no hook or interesting worldbuilding was presented, the first chapter feels like it was crossing off the checklist of the most generic Second Chance tropes and presented literally nothing else of note.
I am predicting it will also be a generic power fantasy since he can use the super rare & OP time magic from the start.
And I don't even want to bother picking apart the holes in the premise that the first chapter didn't even bother addressing in its exposition (although it could explain them later idk) ...
I just sometimes wonder why anyone would make such a generic first chapter, or why anyone would bother reading past a first chapter like this one. (unless this is their first Second Chance story)*
*: If you've just discovered the Second Chance trope and it interests you, you can easily find something better.
If you go to novelupdates, they have a tag for it. There's like a thousand of them. And if you only wanna read comics, you can filter results by adding the "adapted to/from Manga/Manhwa/Manhua" tag to see if it has a comic version, there's hundreds of those.
Just sort by rating and then look it up on Mangadex.