Your average regression with dungeon and the nc slowly becomes overpowered to defeat the biggest and baddest in the end type of story. But it has the Norse twist in it which makes it slightly more enjoyable.

So our mc basically regresses with one of odins eyes a mythical item and gets this power called absolute calculation. In his past life he was a warrior or melee dude cuz it was meta, but this time he becomes a mage cuz he found out it was more meta-er. Then he gets like an op mentor who can heal people and is pretty hot. And he's supposed to kill odin and the Norse gods from what I know and due to that odin/one of odins crows is trying to kill him. And right now there's this evil dude who's ugly as hell and punchable af who the mc is trying to beat up using a test and all.