Board Thread:Questions and Answers/@comment-10797017-20130627100621/@comment-26420452-20131009061322

I'm sure that he must be in the Daten, Yhwach just didn't feel like considering a SWP the only man who could put an end to Aizen's plot.

He stole *Zanka no Tachi. Yhwach may say whatever he wants but the first invasion was done only in order to kill Yamamoto.

@K3npachi: I believe he regards them as a joke "Mere humans believe that they can recruit me... how cute".