Tokyo Ghoul: Jack
The story is centered around the character Kishou Arima, who is a High School student by day and a ghoul investigator by night. The story is also set in and revolves around the 13th ward.
The term 'Jack' states the fact that the protagonist's role as a ghoul investigator could be associated with playing a game of cards: Jack comes under Ace, Queen and King. According to literature, a Jack is considered to be either a servant of royalty, or a very reliable, dark-haired youth. This links the protagonist to his loyalty with the CCG.
