This is really a solid novel and a very unique interpretation of a System as a whole. The novel doesn't have some sort of linear Level Ups at all, its straight up copy of danmachi leveling without the statestics part. So Mc needs to do feats to grow and unlock more of his DLC powers. Mc is a child so expect slow progression with romance and harem, while you can clearly see who will be harem members with the way mc and his interaction with others are portrayed in the chapters.The scope of the verse and power level is ludacrisly high without using excessive power scaling jargon names you often find in other power fantasy novels. This is not that type of novel. The scope of the verse itself seems very secondary as mc's main motive is just to become a harem protagonist, thats all.