This manga was interesting and entertaining. It intrigued me from the start and introduced some great concepts.

Unfortunately, starting from the Nanako arc, it went downhill. Towards the end, everything grows rushed and ends flat. All the terrific character development is abandoned as Manabu, one of the main characters, is reduced to a minor character.

While the manga introduced multiple fascinating concepts, it failed to fully utilize them and ultimately failed to be meaningful. Instead, the author throws a bunch of twisted "wtf" moments and overplays it in an attempt to be meaningful. Could fool those who are newer to this genre, but (sadly) it couldn't fool me.