by Mareho Kikuishi (Author), Yoshinori Kisaragi (Artist), Tsubata Nozaki (Artist)

When an investigation takes a dangerous turn, Echika's Amicus partner, Harold, gets injured and collapses. Despite her deep-seated animosity toward the humanoid robot, she can't help but be concerned. However, when Echika discovers more about Harold's mysterious past, she uncovers shocking truths that could change everything.