|Japanese Voice||Yuki Hayashi|
|English Voice||Bob Carter|
Kowaku was one of the members from the Shichisei who only appears in the anime adaptation. He was originally a Buddhist monk before he became a Shikabane. His curse allows him to change the make up of his body, mainly as a gas. He was successfully killed by Makina near the end of episode 12 of season one when she found his weakness, which was the beads around his neck where his brain is located.