This show had some cool character designs and at times it was endearing enough that if it actually went somewhere it could have been a mediocre but okay show. But the plot development is extremely poor and the show wastes a lot of your time doing nothing of interest for a while. Then in the last couple episodes there is not enough time for the show to properly end. Nothing much gets resolved and nothing really feels worth resolving. The end is not satisfying and leaves as much open as possible for a second season which I don't think will happen and even if it did I'm sure it will just pick up with some random time wasting that makes the season 1 cliffhanger completely pointless. As soon as something interesting starts going on you can totally rely on this show to not follow through and turn it into a waste of time.
In a sense the show starts off as an adventure, but the motivation behind the first goal is not enough to get the viewer interested. Then when the journey ends somewhere halfway into the show, the protagonist goes on a revenge plot, which comes out of nowhere because the protagonist has never shown any emotion or reason to desire revenge until the second he learns there is someone to get revenge on. Then that plot just disappears entirely, if you didn't watch that episode you wouldn't even know because that plot point is never referenced after that episode. It feels very haphazard. More like a loose collection of events than a story.
The characters are all fairly one dimensional and none of them develop. The MC acts in a way that you never know what he's thinking except for the two times in the show that he says it out loud. They killed every potential that he had in order to make him a self insert. By the way, I would have never thought to call this a harem if I didn't see the tag. I would watch other shows for that, nothing really happens to call this a harem. And also the MC has still not gotten over the crush he had on a girl that rejected him IN A PAST LIFE. Even after meeting multiple new romantic interests in his new life over the many years during the show he is still thinking about her. It almost feels like the writer of the show felt like he was rejected only a couple hours ago because that's when the flashback happened, but in the setting of the show it has been way too long to still care.
There's also the power fantasy aspect of the self insert, as the MC is pretty much just a one man army, but the system of powers/techniques is not well explained and doesn't make much sense. Also you never see him training despite him saying he has always kept it up. They also say like 30 times in the first couple episodes that the MC can't use magic, but it's never explained why. But he can use seirei jutsu, which is not magic, but other people can't use it, but it functions essentially like magic. I think the fighting is not that satisfying, as you never see the MC overcome a physical challenge. He mostly wins fights easily against overwhelmingly weaker opponents, and there is never really any threats, so it's not a great show if you're into the fighting and power scaling stuff.
There's tons of other small things that really don't make sense and it just kind of makes me incredulous. If you reincarnated, and you were one of the two people that remembers your past life, and you met the other one, and you recognized them because you died in the same accident, you would not spend years around this person before it randomly comes up in conversation. What a ridiculous plot point, which by the way is pointless and nothing ever comes of it, I guess it's just a bad excuse for one of the characters to call him oni-san. I'm not sure what they were thinking when writing this show. It's just kind of a mess that chooses not to redeem itself. Truly bad in a way that feels intentional at many times. And it's not even a fan service or funny. 0/10, waste of fairly decent animation and artwork for this script.
