Only 3 volumes and yet incredibly painful to get through. Random people download an app and then beat up a giant chicken... I have no clue what the author was thinking with this. The mix of Bleach style action and weird coming-of-age story doesn't mix well at all here. The plot is just random science fiction nonsense that never gets developed. The emotionless, depressing teen characters come across as completely unlikable. These characters needed a ton more personality and expression in order to pull off this type of drama. The action scenes aren't terrible, but you could say that about 10,000 other manga as well.