Sui Ishida

不慮の事故で人肉を食べる“喰種”と人間の中間の“半喰種”になってしまった金木は、董香たちとともに喰種が集う喫茶店“あんていく”でささやかだが幸せな日々を送っていた。そこへ美食家（グルメ）と呼ばれる喰種、月山が出現。厄介だから近づくなと董香に言われる金木だったが、月山と次第に距離を縮めていく。金木は月山に秘密の“喰種レストラン”に招待されて行くが、そこで月山は隠していた正体を見せ、金木に襲い掛かる。

水とコーヒーと人体だけを取り込むという人間の姿をした怪人・喰種が東京の街に紛れ、人々は恐れを抱いていた。そんな中、平凡な大学生のカネキは事故に遭ってしまう。知人の少女リゼの臓器を移植して死を免れるが、それが原因で半喰種となったカネキは、頻繁に足を運んでいた喫茶店あんていくで働くことになる。そしてカネキは、アルバイトの女子高生トーカや、店に集まる客が喰種だと知り……。

The OVA adapts the third story in the Tokyo Ghoul: Hibi novel when Shuu Tsukiyama and Chie Hori met.

Who needs school, who needs baseball, and who needs friends? That's the attitude of high school delinquent, Taishi Fura, who became a loner after falling out with his peers. One day, he witnesses the brutal attack of a ghoul, which left one of his former friends in the hospital and the other dead. Determined to avenge them, Fura decides to pursue the man-eating monster. His efforts allow him to cross paths with Kishou Arima, a quiet student who also attends his high school. Arima, however, is no ordinary student. Despite his young age, he is a full-fledged investigator of the CCG, a government task force that strives to deal with the ghoul threat. Together, Fura and Arima hunt down the ghoul, known as Lantern, but it soon becomes apparent the monster may be closer than anyone suspects. In this side story, Tokyo Ghoul: "Jack" offers a glimpse into the past of Kishou Arima, well before he ever became the CCG's feared God of Death.