Discouraged by his encounter with Hina, Aoba mopes around, but Dio finds his sniveling, defeatist attitude unacceptable, especially once they come under attack yet again.

Aoba, Dio, and Mayuka get to go on shore leave in Hawaii. And in the meantime, the Zogilian contingent plan their next operation to get their hands on the Confederation's Coupling Valiancers.

The Zogilians infiltrate the Hawaii Base. While the crew of the Cygnus work to thwart them, Hina's father reveals a startling truth to her.

Aoba Watase is a normal first year high school student coming back to school after summer break when a mysterious robot comes after him. He has never seen it before, but its pilot seems to know him and wants him dead.

The crew of the Cygnus work through the fallout of losing the Luxon and the Bradyon, and of the flawed Coupling that Aoba and Dio conducted using the old Coupling Valiancers.

With over half their fleet gone and up against enemy Coupling Valiancers, the Cygnus is tasked with taking down the Gorgon, Zogilia's weapon of mass destruction.

Kinji and Aria arrive at the mansion to kick off operation stealthy butler and charming maid. When a familiar face answers the door, the duo and their ring leader will have to get crafty to reach the rosary.

After reluctantly agreeing to help her sworn enemy, Aria struggles with the frills of Riko’s undercover training. Later, Kinji’s surprise session has him sweating bullets in a hot closet.

Akari Mamiya is in Year 1 at Tokyo Butei High School. Although she is currently in E Rank, her goal is to become a BUTEI like Aria Kanzaki, an Upperclassman in Year 2. In order to receive training from Aria, Akari submits a request to become Aria’s Amica.

Riko gets her rosary back but things get hairy when Vlad of Innumerable Sins bursts onto the scene. When the trio is down to one bullet left in each gun, they’ll have to trust Kinji’s hunch to bring the beast down.

Aboard a quickly descending jetliner, Kinji corners the Butei killer, who makes an explosive escape—but not before inviting him to a secret organization. As Kinji and Aria try to land the plane safely, they get some unexpected help—and interference.

Aria shows her cute side when she follows Kinji to the arcade after school. Later, when a bus full of Butei High students is hijacked, Aria calls on Kinji to team up with her to save their classmates.

The Quartet match between Team Mamiya and Team Takachiho has begun. While Akari and Shino go out to find their opponent’s eye flag, Raika and Kirin defend their eye flag from an attack by Hina Fuma, who seems to know where their eye flag is.

Kinji’s nerves are shot over the all-out war between Shirayuki and her pint-sized protector, so he takes the job into his own hands. But after a night of fireworks, the shrine maiden gives him the slip!

Takachiho decides to take action to make her fantasies about getting close to Akari a reality. But when Shino catches on, she challenges Takachiho to a duel.

Although Raika doesn’t want to admit it, she seems to be worried about Kirin and Riko’s relationship. On the other hand, Kirin is worried about Raika and Akari’s relationship. In order to resolve the situation, Kirin takes action.