User blog comment:Xilinoc/Ch. 594 (something something ech)/@comment-3230060-20140829132744

I went and re-read some stuff about Akon trying to figure his roll in all this. And I found some interesting points of interest that might apply to this fight, specifically Pepe. So Pepe was the one took control of the SRDI, Askin was the one who spoke about shadows and where the Quincy were hiding, and Akon was the one that reported all the missing Shinigami signatures. Ok stay with me here.

What if Pepe caused/asked/told people who loved him to go INTO the shadow world. This would effectively force their signatures to vanish, like Akon noticed with Izuru Kira. This could also explain where Yachiru is and Isane are. (also nude Yachiru + Pepe....gross) If this is true, there's a chance we get to see some of the people who have "vanished" return under some form of Quincy control. I see them trying to pick up the most useful/utility Shinigami. Isane for healing, Yachiru for blackmail, Izuru for his awesome powers.

I've been wrong on just about every bleach thought I've had though, so probably not.