Black ParadoxBlack Paradox.

Black Paradox (Japanese: ブラックパラドクス, Hepburn: Burakku Paradokusu) is a Japanese manga series written and illustrated by Junji Ito. It was serialized by Shogakukan in Big Comic Spirits Zōkan Casual (2007 to 2008) and YS Special (2008 to 2009); its chapters were collected in a single tankōbon volume. The story follows four people who meet to attempt a group suicide, but before they can kill themselves, they discover a bizarre phenomenon that could change the course of the world.