Might be off-topic since it seems that many here prefer Japanese LNs, but I'm currently reading:
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Leveling with the Gods - power-scaling regression story, I thought that the pacing was incredibly fast but it still kept everything coherent. The main story has finished, but the side story is still going on, which I would argue is nearly as interesting as the main story. The side characters enrich the story so much despite the entire novel taking a more serious tone, there's still really great moments of "this is what I've been fighting for." My friend has described it as "Solo Max Level Newbie but more serious" (also a good read btw)
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Level Up with Skills - main story still not finished, this is basically the opposite of The World After The Fall in that the MC ABUSES the system and is getting overpowered by being scrupulous essentially. There's not many very good points, but it also doesnt really do anything wrong IMO. Very fast paced and a really enjoyable read. Very serious tone with less humor than Leveling with the Gods but with a lot of interesting powers (suffers a tiny bit from "chosen one" trope and it feels like a lot really does fall into MC's hands, but I've read enough power-scaling that I don't mind it)
I love coming back to random responses because I still take a good 10 seconds squinting at the image trying to remember what it says