A heinous crime occurred in 2004. That year, the lone Princess of the Cazburn's was murdered. According to the news, she was tortured several times before being killed. Her loved ones continue to seek justice for the maiden, until an organization was formed where the so-called Assassins work. The Assassin's World or better known as the Underworld, it manages the missions of killing and prosecuting criminals. They always help in the work of law enforcement to bring justice to the victims. Royalties lead that organization, led by the Princess of the Geordan nation; the only sister of the crowned Prince. The Prince knows that the real culprit is an Assassin; the one who killed his Princess, that's why he doesn't want to stop investigating about that case. He knew that an investigation was the only solution so that he could solve a closed case way back on year 2004.
Who do you think is the real culprit?