The 177th chapter of Sekirei by Sakurako Gokurakuin, serialized in the seinen manga magazine Young Gangan published by Square Enix. The first chapter of the 18th and final volume titled "Decision of Sahashi Minato".
Having won her battle with Karasuba, Musubi rushes back to her Ashikabi, Minato and fellow winged Sekirei only to discover a grave situation. All the Ashikabi have collapsed with symptoms similar to a terminated Sekirei.
Having fallen unconscious, Minato finds himself in a dream state within Maison Izumo. Wandering as he attempts to find everybody he discovers it empty.
He soon discovers Uzume on the roof who explains that he shouldn't be there. Further she wonders what they are doing to send an Ashikabi there first.
She explains to Minato that only one Ashikabi and only one Sekirei, regardless of how many he has winged to him may advance to Kouten. He has to choose.
Meanwhile, in the waking world, the Sekirei of all the Ashikabi are worried about the state of the Ashikabi who have all fallen.
Describing he state to being similar to a Sekirei terminated state they begin to worry for their own safety on top of the Ashikabi.