Devils' Line, Volume 6 (Devils' Line #28-32)

Ishimaru tries to bring in Zero Seven and Nine to get inside info on the CCC. In exchange for her cooperation, Zero Seven asks for information on the devil that murdered her mother, and the fateful meeting between Seven and Kikuhara is revealed. The house of an activist for devil rights is set on fire, and at the scene, Kikuhara pushes Anzai to remember his past...