User blog comment:Godisme/Everything But The Rain/@comment-2120712-20130228082530

I think Isshin is the 10th division Captain everyone thought was dead from the TBTP arc. As for why Shinji didn't recognize his reiatsu because he "died" before Shinji took up the Captaincy which raises up the point of how many years has the Division gone without a Captain at the time of TBTP? Yes, I would of loved more but I have to give it to Kubo for giving us that she was a quincy. It is Kubo afterall.