Zerozaki Kishishiki no Ningen Knock  

Kishishiki Zerozaki's Human Knock, 零崎軋識の人間ノック

The Zerozaki Ichizoku family is ranked third in the assassin community's underground world. They are renowned for their unwavering family bond, and every member possesses exceptional combat skills to protect their kin. One of these members is Zerozaki Kishishiki, who wields a bat with nails as his weapon of choice, which he calls "Praise of Folly (Seamless Bias)." Initially, his next target was an ordinary individual, but things took a turn when he discovered that he had become the prey of a powerful adversary.