Board Thread:General Discussion/@comment-3423279-20160110184118

Oetsu said that the Asauchi are formed from a multitude of Shinigami souls correct? But I have to wonder where the souls came from, does it sacrifice and kill Shinigami or what?

My only thought is that the "souls" is more the reiatsu of Oetsu, which he uses to make the blank swords that other Shinigami use to create their own unique Zanpakuto.

If Oetsu used "live" Shinigami it would be cutting down their forces so I don't really get what he meant when explaining it. 