So, if Jin practiced long enough, with him being immortal and all, would he be able to evole a energy core, or perhaps a artificial on made out of mana or something.

Honestly, I can’t rate the world building or update stablity quite yet as this is a new novel. However by the story so far I can tell it has some basis of uniqueness. As I don’ want to spoil anything from the story, I will just say that it’s a change of pace from the things I’m used to in these kinds of novels, for one they did not go for the transmitter or reincarnation trope (witch I’m quite happy about) they make Jin(the MC) seem like an actual child (although a really smart one) but still a child nonetheless.the writing quality so far feels like it’s supposed to(take that as you will) there emotion in it and some quirks ,such as the daughters “r” problem in the beginning. Now for the part I liked the most is the power system, I know it might seem a bit plane but that’s what I feel like it should be this early from what I see there are common people in this world and they would only know about a “simple” version of the power system and the author can develop on it later if they decueide to continue( and I really hope they do). And now Jin’s “power” the concept of what “immortal” is in this since I don’t know yet but from what I can tell from the “physical” I might be something realated to energy instead of the traditional sense, but that’s not for me to decide. I went on a bit of a tangent but the short and sweet is you should read the book lm not a writer so I don’ know if I worded this well so my final statement is Just read it