Zerozaki Kishishiki no Ningen Knock(2006)

Zerozaki Kishishiki no Ningen Knock

Let's commence the Zerozaki, cha.
The most crude and merciless demonic killers fight to the death.

The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names. Zerozaki Kishishiki, the user of a bat covered in nails known as "Seamless Bias (Foolish Prayer)". One after another, elite Killing Names enter the field. What lies at the end of this deadly battle? The forefront of new youth entertainment is here!

(Source: Kodansha, translated)