An incident involving a human-devouring Ghoul occurs in Tokyo's 13th Ward. To seek the truth behind what happened to his friend, the rebellious high school boy Taishi Fura pursues the Ghoul named Lantern with the young ace investigator Kishō Arima. The story follows how the ace investigator Arima and the talented 7th Ward investigator Taishi Fura first met.
Shuu Tsukiyama (aka Gourmet) is photographed by Chie Hori, a classmate, while eating a meal. However, she doesn't seem fazed by him or his choice of meals and is apparently in it just for photography. But Shuu Tsukiyama doubts her motives.