B: The Beginning

Minatsuki takes a wounded Yuna while Market Maker attack an enraged Koku. Kamui keeps Koku occupied, and dozens of harpoons are launched from the airship Moby Dick, impaling them both. Keith fires a shotgun at a gloating Minatsuki, who is shocked to find the wound burning. On Laica's counsel they withdraw to the airship, leaving Keith to tend Koku's injuries. A flashback shows Koku and Yuna as children at the institute, making their secret sign, and being separated when the institute was attacked. Koku's protectors died defending him and he assimilated their body parts, but couldn't live with the guilt and suppressed his memories. The RIS is given 24 hours to find Keith or face disbandment. Minatsuki's left arm is amputated by Regulus, the ringleader who led Market Maker's revolt. (Source: Wikipedia)