Review Detail of nericen in My Cards Can Be Fused Limitlessly

A strange protagonist, "He can't do what ordinary people do, but ordinary people can't do what he can do.," sums it up pretty well. World building isn't there, because this isn't a world. It's a simulation in the form of a game populated by broken souls. Once the MC jumps out of the game the setting gains a bit of depth, but, with the end just around the corner, nothing is fleshed out. 99% of the story follows the protagonist's perspective, so we learn what he learns as he learns it. The ending wasn't bad, a little open-ended, with a bit of a legacy left for those fated.