User blog comment:Xilinoc/Ch. 651 - The Theatre Suicide SCENE 5/@comment-5693502-20151112072716

I read it as Kyōkotsu (younger half of Shunsui's zanpakutō) liking hide-and-seek so much that she hid Nanao's blade for him, rather than his zanpakutō creating a whole new spirit from nothing.

So Nanao has the Infinity Sword +1, but even so, she's still a Lieutenant whose skills should be far below Mr Invincible's. Realistically, Lille should still trump Nanao pretty darn easily. Do I see Lille holding the Idiot/Villain Ball somewhere down the line ? Yes, yes I do.