The ark slumbering under Kamikura Island shuts down, leading to an invasion by a foreign military force! Meanwhile, Karasuba is driven by delusion--forever awaiting a friend who will never return--and Musubi is the only one who can face her. Who will be the last to survive this final "party"...!? The raging waves of destiny crash down in this volume 17 of the battling beauty romance!!

Minato Sahashi is a rounin, a two-time loser who's failed his college placement exams. Just as he's contemplating giving up and heading home, though, a chance encounter changes his life forever! Enter Musubi, a girl who literally falls into Minato's life! Musubi is a Sekirei, a modified human caught up in a game in which only one of her kind can be left standing. In order to be victorious in this contest, though, she needs to find her Ashikabi (her fated partner)...and guess who fits the bill?? Caught up in battle he barely understands, can Minato survive "The Sekirei Project" and emerge victorious? Either way, with his buxom new cohort by his side, his life will certainly never be the same!

Now that Kagari-san has been winged, Phase Three of the Sekirei Project is primed to begin in earnest! Minato learns a good deal of the history of MBI and the Sekirei, but will what he's learned be enough to prepare him for what's to come?

A volume of extra bonus stories set after the end of the main series. See what the girls are up to now! "Together forever," is it...?

Phase Two of the Sekirei Project is winding down, but MBI's CEO is determined to make sure it ends with a bang rather than a whimper! When he announces that only one Sekirei remains unwinged, all eyes turn to the North Area. It's a race to claim that final unwinged Sekirei -- Kagari-san?!

The Teito Escape Plan is underway! Time for Kuno and her Ashikabi to escape the city! With Tsukiumi deliberately sidelining herself, Minato's team is down one of their heaviest hitters. Do they have enough firepower left to see the job through? They'll have to fight their way past the Red and Blue Sekirei of the Disciplinary Squad to do so, which seems unlikely... Maybe it's time to expand Minato's harem yet again...!

After going to rescue Aoi, Hanako-kun and Nene are thrown from No. 6’s boundary and suddenly find themselves in a strange village, where they meet a girl named Sumire who seems to have a history with No. 6. Witnessing Sumire’s “wedding day” up close might just give Nene a hint on how to resolve the school’s impending crisis and save Aoi—but she’ll have to survive it first! Meanwhile, on the very banks of the Far Shore, Aoi and Akane finally put into words exactly what they mean to each other...