There's a lot to be interested about with Memoria, because I think it's a pretty good representation of how the afterlife could be marketed to those who aren't ready/don't want to die. It felt real to the point that I fully expect one day someone will try and create a digital world for those on death's door.
I think the characters give the story soul though. Everyone had a pretty great personality and dynamic with each other, especially Jiro and Archie and their exploits. I won't name the character for the sake of spoilers, but one of them sent me on a roller coaster of emotions the whole story, which kept me guessing their loyalty.
Overall, this was an action packed read from start to finish! Very fun!