As being neglected and bashed from his own now the former family wasn't enough, they sold him off in the black market, being far away from the hell. Not losing hope and believing something far greater at their caused the Greater Grail to have the young boy become its champion and one day save the new world from the evil and corruption that lives within.

After seeing his friends tortured and killed, Tatsumi turns away from his original goal and joins the assassin organization Night Raid, plotting to kill Prime Minister Honest and change the Empire for the better. He just didn't expect how it would take such a drastic turn from what he thought would happen. COMPLETED.