First, the title "Satsuriku no Eden" translates to something like "Paradise of Satsuriku," but I'm not sure if that's the official name. The subtitle "Ashita Dareka ga Shinu Rennai Reality Show" might mean "Tomorrow, Someone Dies: A Crossover Reality Show." The main elements seem to be a reality show where people are connected (ren'ai might be short for "ren'ai" which is romantic relationship or love) and someone dies each time. It's likely a dark, psychological manga, given the title.
