User blog comment:Xilinoc/Ch. 642 - BABY, HOLD YOUR HAND 5 (EYES ARE OPEN)/@comment-25162509-20150910104326/@comment-24384892-20150913155440

Nemu clearly has a zanpakutou. She used it to sever her arm a couple chapters back. I'm not expecting to see a bankai or even a shikai from her anytime soon, though.