Sekirei - Vol. 6 Ch. 56 - The Last One

[MangaDex]

 

[Tatherwood]

Yup, she's mentioned Stage 3 twice, but let's swipe it under the carpet.
Also, because the singing Sekirei ran away, now the game cannot be ended and Musubi can't fulfill her promise. So there's that.

Also, Tsukiumi. For all your "wife" rant you sure don't mind showing your EVERYTHING to some random dude.