YOU STUPID BASTARDS WHY ARE THE LITTLE PISSANTS STILL ALIVE RAAAAAAR!!!!!!
That's how the protagonist of 'Damn Reincarnation' reacted when he found out that his old comrades didn't keep their promise to really put EVERY demon king under the ground. Once part of the hero squad, he saved his best friend's life by throwing himself in front of him and perished himself. His last words were a promise between him and his comrades that they would definitely remove the last two demon kings from the face of the earth!
Unexpectedly, the protagonist now wakes up 300 years later as the distant heir of his former friend and hero. Now known as 'Eugene', he not only retained his knowledge and extremely stoic character, but also inherited the powerful genes of his friend and hero. Nevertheless, it makes him EXTREMELY angry to learn that his comrades did not keep their promise. So he sets himself the goal of finding out what the heck happened that they not only didn't keep their promise, but also simply disappeared about 200 years ago.
After this somewhat lengthy description, I'd like to take the wind out of your sails right away: The mahwa is pretty darn good, but it hasn't gotten any updates since December last year, and there hasn't been any news on what's going on since then. Obviously, I can't recommend a story like this and obviously this also lowers my rating extremely.
That's why I want to keep my praise short, because otherwise this will end in whining about why such an interesting project was (apparently) abandoned. Since I'm extremely interested in history I found it extremely fascinating that the protagonist does a bit of archaeology. Don't get me wrong, he's not digging up old ruins, but he's looking for clues about the past and following the path of his old comrades. In doing so, he rediscovers old graves or secrets, for example.
At the same time, we have a rather classic 'OP protagonist comes out of nowhere and convinces everyone of himself' story here, which becomes funny mainly due to the rather rough, stoic and honest character of the protagonist.
Conclusion: This could easily have gotten 8 out of 10 points, but I'm reducing it to 4 out of 10 due to the extremely long break without any news. My only reason for this is really the break, which probably shows how unfortunate I actually find the whole thing.
Small note: There seems to be a 'light novel' (aka a book with pictures every 50 pages) which is completed. So if you're interested in reading this, maybe you can give it a chance if it's available somewhere - I'll think about it.