|Japanese Voice||Minoru Shiraishi|
Kazuki Sakuraba (桜庭 一騎 Sakuraba Kazuki) was an agent of the Ministry of Environment's Supernatural Disaster Countermeasures Division and member of the field team that led by Kouji Iwahata.
Kazuki had short haircut, and dark eyes, just like the other agents, he wore a formal suit and tie.
Kazuki was a friendly, easy-going, and sociable person.
In the anime, it was revealed that Yomi Isayama killed him due of Noriyuki's inability to kill Yomi, explaining why he doesn't appear in the manga.