The Labrynth Maze

Kazuki Haruto is a normal teenaged boy like everyone else, well almost similar. He has lived a pretty sad mediocre life with no action or motivation on what he wants to do. It wasn't until he was about 6 years old when the world started to change. A massive cube in the center of the world formed and people all over the globe started disappearing. No one knows whats inside, but it wasn't until a survivor came and spoke a few words. Only a selected few are chosen to enter and Kazu Haruto just so happened to be one of them.