本庁の内部監査に向け整備班のくるみはリボルバーカノンの実弾が一発紛失していることに気づく。くるみは桔平に相談し連鎖的に他の隊員たちも巻き込まれていく。その事実を知らない十和と紗希は桔平たちの態度に疑いの目を向けるのだが…
While preparing for an internal audit at headquarters, Kurumi, a member of the maintenance team, notices that one round of ammunition for the revolver cannon is missing. Kurumi consults with Kippei, and the other team members are drawn into the mess. Unaware of this, Towa and Saki become suspicious of Kippei and the others' behavior…
