Both OVA episodes of the Japanese animated series. 

'Jack' tells the story of Kishou Arima (voice of Daisuke Namikawa) long before he gained notoriety as the 'God of Death'. He encounters a vengeful Taishi Fura (Ryouhei Kimura), who witnessed the death of a friend in a vicious ghoul attack, and enlists his help in tracking down the menace. 

'Pinto' adapts the story of how Shuu Tsukiyama (Mamoru Miyano) and Chie Hori (Megumi Han) met one another from the 'Hibi' light novel.