So, obvious problem here: Most of the events are rushed. Like, everything is way too fast.
Second problem: The art is trying to be serious? But we get usuall "funny" expressions from the manga, that don't hit, because we see it all the time.
Another problem: Everyone forgives him too easily, or rather, we don't get any forgivness development for characters, it just happens.
I could easily get 5 maybe more chapters of him since reincarnation to the start of training arc, and it would be interesting, duh, would probably make the manga better.
Training could be still a time skip, it's fine, time skipping training is ok.
But... um, it doesn't feel like he deserves to be this strong tho? Either don't show the training at all so we must imagine what he went through, or make it feel earned. All I saw was a guy running around and BOOM he has level 10 that no one has. Maybe show this time from this maid perspective, so we care more?
I could be annoyed more, and complain more, but this is clearly isekai slop, I have no excpetations