Kazunari Ninomiya
Kurono was created by Oku as a character that would be relatable to manga readers, resulting in his having multiple weaknesses; he is one of Oku's favorite characters, alongside Kato. He was voiced by Daisuke Namikawa in Japanese and in English by Christopher Ayres. For the live-action films, he was portrayed by Kazunari Ninomiya. Both actors for the anime adaptation stated they enjoyed voicing the character to the point of relating with him.