That Time I Got Reincarnated As A Primordial Demon

I have mixed feelings about this story, I like the whole premise and the character additions, the writing is good enough and the protagonist is charismatic... my problem with this story are some details, the first point is the refusal of the protagonist in getting stronger(I currently read up to chapter 17 and despite the protagonist being weakened and having lost some abilities, the protagonist believes that it is an excellent idea to change to a weaker body, like most readers I don't like nerfs ), second problem, the protagonist is virgin resents this and does nothing to solve it (even though he has lived for thousands of years), and third and final problem, he died on Earth as a teenager and lived thousands of years as a demon in the underworld, and despite the interactions and environment he lived in most of his life he still acts like a Japanese teenager... I feel like he didn't have the growth he should have had considering the time he lived and the environment he grew up in... I think it's a good story and I wish the author luck but I believe it's not a story for me.

I've read upto 20 chapters and plot is good and although I dislike script writing styles your's is good enough to pass but the only problem for me is that mc has been living for thousands of years but he still acts like a Japanese teenager and why does he not like to get stronger,unless he's threatened? I mean what's his goal?

It's very annoying that when he can grow stronger he doesn't and always gets slapped like an idiot and crys about shit for an example he could have asked wise sage about further evolution but doesn't and wasted a nation worth of human souls and there were a lot of casualties in the dragon arc but where did souls go he could have gathered them and went for a harvest festival and the fact that everyone around him gets ultimate skills but he doesn't and he won't even use the skills he copied and even when guy becomes a demon lord and he doesn't even know about the harvest festival when he have literally the god od knowledge the wise sage

Quite the cheeky bastard reviewing myself. I actually read my own fanfics to see if there are any mistakes before correcting them. I don't know how you guys feel about it but I think I did a pretty good job on it.🥲🙂🫤

so far , I really like this fanfic. i especially like the part where he's the first demon. and the demon king, i think. never read a tensure fanfic with an actual demon king the most other demon mcs in fanfic were a regular primordial.