Sōritsu Kuchiki (創立朽木, Kuchiki Sōritsu) was the first Captain of the 6th Division in the Gotei 13, with Himuro Kyousuke as his Lieutenant. Sōritsu was eventually killed by Himuro, who was in actuality a Battle Doll created by Averian, and then replaced by a Battle Doll. Sōritsu became Averian's pawn and retreated from public life, whilst Himuro took over the 6th Division Captaincy. Sōritsu, seeking a pawn to further his master's plan, closely monitored the Kuchiki Clan for centuries. He would eventually settle on Ryan Kuchiki and thus began moulding the latter into a suitable fusee, eventually performing this in-and-around the time of the Collapse. The Sōritsu-controlled Ryan thus became the Captain-Commander of the Gotei Remnant.