Good book, interesting view as a Dungeon Core, Mc is a bit naive and stupid at times, but still a pretty good MC. Not much lore yet, but there's seems to be some coming up, recently established ranking system for the bosses of his Dungeon, although no ranks for the normal mobs yet I believe there will be. Interesting take on how when creatures or humanoids die in the Dungeon, he Becomes able to make them. Although there is no summoning of his own type of creatures, he is able to spawn in multipul copys of anything that dies within his Dungeon minus any intelligence they had when alive. Although the MC is a bit late on the uptake that he is a rock/Dungeon Core & not a human. I believe he will be able to grow soon enough to become a Ruthless Dungeon Core. Book is very similar to those Demon ruling a Dungeon type Tropes with a bit of a twist where it's the core itself, so it's not the enemy of humans. So far, I'd say this book is 8/10, but if/when the MC becomes more ruthless it has the possibility to be a 10/10