I was completely tricked by the incorrect description of the series- for some reason the description describes what happens BEFORE the setup of the series (so basically.. only chapter 1). What the real setup is:
Seven teens wake up in the cafeteria of their high school. They hear a voice projected telling them that they have only three days to escape the high school. They have to each get a password to escape, and to get a password they have to undertake a dangerous and life-threatening task. To make matters more complicated, they are told they have to use their own supernatural powers, which 5 students already knew they had, but 2 didn't.
If that sounds like that would interest you, then the series is for you. Honestly I loved this series, I love mission-based action with a distinct group of characters and this satisfied me completely. While the main character was admittedly on the side of being the cliche shonen MC type, he had enough groundedness (and the marriage gimmick was fun too) to be likeable. But all the other characters in the group were awesome, each with their own really unusual and unique powers and differing backstories and motivations.
As to the identity of Enigma, I thought it was super obvious all the way at the beginning, and I thought they accidentally gave it away at one point- but I was wrong! The real enigma- the decision was okay, I was fine with it. Some of the details after chapter 42, I feel were solid, could have been improved, but were still satisfying.
The only thing I thought was a really weird decision, like, I've never seen this in a series before,
was to have no villain at all. Like, no villain. The last scene was literally every single character in the series enjoying themselves at a festival, getting along. There are five characters that did some pretty terrible things mostly off-screen and they made a point to both justify everything and to fix it so it didn't matter anymore. It was just strange in a story with this type of plot to have every character as a good guy at the end...
Overall, I loved this series and I would recommend to anyone.