One day, Asato's younger brother, Yuuto, committed suicide. Asato logs into Yuuto's PC to find out the truth behind the suicide. What he finds is an internet bulletin board with a record of the horrific bullying his brother suffered. Asato promises to find the bully and take revenge on him. Then, he receives a phone call from someone claiming to be the administrator of the bulletin board. It was an invitation to join the "Revenge Sharing Society," in which people help others take revenge in order to have their own revenge fulfilled in exchange. A suspense story of seven people with a shared fate as they take their revenge!