The Zero-Sum Original Anthology Series features themed oneshots from various mangaka that publish in Ichijinsha's Zero-Sum and Ward magazines.

Volume 1: Butlers [執事]
Illustration: Kouga Yun
Cover Illustration: Minekura Kazuya
Back Cover Illustration: Takayama Shinobu
1. Kumo no Su (蜘蛛の巣,...