Nene Saikyo vs Akatsuki Academy

Nene Saikyo vs Akatsuki Academy is a fight between the Hagun Academy teacher Nene Saikyo and the Akatsuki, a secret eight school. It takes place during Akatsuki's attack on Hagun Academy.

Prologue
The Hagure Sisters are carrying the unconscious Stella Vermillion away, fleeing from the Akatsuki. They are, however, caught by the group, who intend on attack them. Simultaneously, Nene Saikyo, a teacher of Hagun Academy and the 3rd ranked Mage-Knight in the KOK A-League arrives to defend the students.

Battle
Ouma Kurogane, an A-Rank member of Akatsuki, uses his Noble Art, Kusanagi, to attack the Hagure Sisters and Stella, launching a gigantic tornado of wind towards them. His attack, however, is blocked by a Noble Art of Nene, Black Sword ・Yatagarasu, creating a large black gravitational blade, which counters Ouma's own attack. Ouma calmly notes that his attack does indeed drop by its third usage, as he had previously used it against Stella and Touka Toudou

The Hagure Sisters are overjoyed by Nene's appearance, believing that they are now saved. After checking that they are okay, Nene turns towards the Akatsuki and starts talking to them, berating them for attacking Hagun Academy. Ouma tells her to hand over the students, but Nene refuses, ordering the Akatsuki students to not try to negotiate with adults.

Nene activates another Noble Art, Jibakujin, which increases the gravity by ten times. All of the Akatsuki members fall to the ground, except for Ouma, who is unfazed. He turns his blade, Ryuuzume, towards Nene, who prepares another Black Sword ・Yatagarasu. Their battle is, however, interrupted by Reisen Hiraga, the leader of Akatsuki, who has just arrived. Hiraga asks the other Akatsuki members to withdraw, as he is worried about what will happen to them if Ouma fights Nene, noting that their "sponsor" wouldn't want them all to get seriously harmed. Akatsuki then withdraws, with even Ouma agreeing to stop his fight. Nene lets them withdraw, not wanting to chase them. Nene also notes that Akatsuki is going to be a lot of trouble.

Epilogue
After the Akatsuki leave, the Steering Committee of the Seven Stars Sword Art Festival decides to allow the eight school to participate in the Festival, as not allowing them to participate would make the League of Mage-Knight Nations, who organize the Festival, seem weak. The sponsor of Akatsuki also announces himself, being Bakuga Tsukikage, the current Prime Minister of Japan and the former Director of the Hagun Academy.

Due to the inclusion of Akatsuki, the other representatives of the schools are allowed to withdraw, with the Hagure Sisters, Kanata Totokubara and Nagi Arisuin withdrawing from Team Hagun. Shizuku Kurogane, joins the team after being offered the position by Kurono Shinguuji.