Agree to all of this!! But I think the part about Moon's (MC) character dying could be a set up by the creator, or bad character building or writing, or because well Moon is literally traumatized and clueless anout many things right now. Its literally only been a few days when all this even more chaos started for him, and again Moon is literally clueless about almost everything since he was 'isolated' (he was in the place wherein the kind of knowledge isn't available or common).
And theres also the fact that Moon is still 'growing' as a character and person, he was a weak person when he was introduced and although he has awaken there are limits that prevent him to present them or use them at their highest potential, like one this powers thingy is still new to him, he still doesnt know about what its does fully, and theres Black.
We're still in the begining arc so I believe the story is still building up further on Moon's story, but I do hope soon that the author does do something more to establish Moon as the main character. Like flesh him out more like you said. But again we're still at the beginning, (sort of lol even though its been 30+ chapters) the other characters were only just introduced to the Mc literally a chapter or two ago but not once had they had a chance to ineract and build a relationship/dynamic yet.
This comment is in no way to send you hate but I just want to share my thoughts with you, I hope you dont mind (if you do I can probably delete this, just tell me so, sorry). I just want to be positive since the story is really interesting and has lot of great potential and I believe that its still too early to judge, but that is an opinion of mine only, its alright if you dont agree. Currently, the best thing to do right now is to wait and see how the story will go.
I love the little blonde girl and robot. Love her big bro and little sis dynamic with the white hair. I also am very curious about the actual big brother being asleep. He might be the key in this story. Hope we see more of them and their relationship.
At this point anyone but mc is interesting and well written. I was hoping a lot after mc's childhood friend dying but mc's character died w him as well. Like do something other than occasionally acting cool, i feel like author built way more interesting relationships outside of mc. Mc only interacts w the purple guy but it is only to awaken his powers.