Kei X Yaku: Bound By Law manga volume 5 features story and art by Yoshie Kaoruhara.

Thanks to Taguchi's elite resources, the team can finally put a name to the shadowy fifth man involved in the Tetra building incident: Lon Aterof. The race to reveal the true nature of the explosion is on, with Ichiro and Shiro moving to secure the perpetrators before Aterof and his lackey Nina can. But with every turn, Aterof has come out one step ahead, leaving Ichiro and Shiro to calculate their next move from an unlikely safe haven…