Premise: The protagonist is a reformed child soldier from modern Earth (and what is implied to be an African nation), who dies as the result of enacting vigilante justice on people threatening his adopted son and his family. After his death his karma is about to pull him into the local version of hell, but he receives a second chance: by shedding some of his karma, he gets to reincarnate under the patronage of a vaguely powerful (if dubious) entity, with an equally vague mission to fulfill in his name. Thus, he is reborn as a teenager into a world of magic, magitech and dungeons.
Setting: The world is a fairly unusual combination of litrpg, dark fantasy, and some magitech/sufficiently advance technology. It is also mostly inhabited by various breeds of human/animal hybrids, with their own stats, skills and racial traits. There are also dungeons, but unlike the usual fare in most such stories, they have a distinctly eldritch atmosphere that harkens to the Dark Souls series, in a good way.
Characters: At the writing of this, there haven't been enough chapters released to make solid judgement, but this far the protagonist is fairly interesting. He is older and thus calmer than the typical isekai protaginst, and he is not a gamer, thus most of the systems are alien to him. Because of this, he doesn't yet egage in any of the typical munchkin behavior typical of litrpg MCs. He also has his own share of mental baggage and traumas, while also having to occasionally fight for mental control against his sentient sword, who is a bit of a blood knight. As for the rest, most of them are kids, and they are written fairly well as kids, but there isn't much else to say. There are no sign of romance yet either.
Writing: Nothing groundbreaking at the start, and the worldbuilding takes its sweet time, often leaving the reader confused over the terminology that keeps popping up all over the place, but the descriptions of the action and the atmosphere of certain locations and events is superb.
Overall: While it is a little early to say, the series shows great promise. It has an interesting setting, an atypical protagonist, some really good, atmospheric writing and just a bit of mystery to keep the reader's attention. While the first few chapers are a little bumpy, the writer quickly finds their sea-legs and the quality improved a lot by the most recent chapter. All in all, I would recommend keeping an eye on this work.