Senran Kagura: Ninja Flash!

As Asuka continues fighting against Homura, she sees a glimpse of her memories, in which she was betrayed by a man she thought loved her and killed him, before using a shockwave technique to escape. Meanwhile, Rin explains to Kiriya how she initially planned to have her students beat his in order to prove herself the better ninja. However the dark faction's leader, Dougen, issued a new plan behind her back to try and combine the scrolls. Whilst Ikaruga and Katsuragi push past Yomi and Hikage, Yagyuu catches up to Hibari and manage to get past Haruka and Mirai. As Asuka reaches the top of the tower and once again clashes with Homura, Dougen makes his appearance, stating he plans to wield the power of the scrolls by using them as vessels. Asuka and Homura are forced inside a shinobi barrier where they must face against Dougen's secret ninja art, Orochi, whilst the other shinobi team up to fight against a legion of mechanical guards. Homura prepares to sacrifice herself to stop Dougen, but Asuka holds her back, asking her to have faith in her friends. Sure enough, Hibari manages to combine her power with the others to break through the barrier, using their spirits to power Asuka and Homura up, allowing them to retrieve the scrolls and defeat Dougen. Pushed into a corner, Dougen sets the castle to self-destruct, so the Serpent girls stay behind to help the other students evacuate whilst Rin sacrifices herself to take Dougen with her. Some time later, Asuka gets promoted before everyone sets off on summer vacation, confident that they will one day meet the Serpent girls once more, as no bodies were ever found amongst the castle's wreckage.

Having overheard Kiriya's conversation with Rin, the group make plans to travel to Serpent Academy, with Hanzou giving his approval despite Kiriya's concerns. Meanwhile, Hibari attempts to locate the stolen scroll, where she overhears Rin speaking with her leader about her plan to lure the Hanzou Academy girls in order to utilise the power of the Ying and Yang scrolls, which is seen as an act of betrayal. As the Hanzou girls set off, Kiriya and Daidouji decide to follow after them. As Hibari asks the other girls how they feel about their teacher, she gets the feeling that they're not bad girls at heart. Later that night, Hibari listens in as the other girls are informed of Rin's apparent betrayal and are instructed to eliminate any intruders, with their lives at forfeit should they lose due to a forbidden art placed upon them. However, Hibari is caught by Haruka and locked up alongside Rin. Meanwhile, the Hanzou girls begin their infiltration, with Yagyuu managing to use Hibari's scent to locate the secret entrance to the academy, coming face to face with Yomi.

For most of this episode, we see flashbacks. Each to which flashed back to when all 5 of the girls first joined the Academy. We find out how Katsuragi teaches Ikaruga to open up. And when Asuka first joined, she appeared to be just an amateur, but eventually began showing promising signs. Finally, there was a flashback to when Yagyuu and Hibari had first joined. Once the flashbacks ended, Suzune and the mysterious leader of the Serpent Academy continued to discuss plans to obtain Hanzou Academy's Yang scroll. At the end of the episode, the pin that Haruka gave to Hibari begins to glow, and it appears as though Hibari may have become Haruka's puppet.

The battles from the last episode continue. Mirai loses her battle against Yagyuu, causing the Linked Shinobi Barrier to become weaker and the dark shinobis to retreat. Despite the Hanzou Academy students putting up a better fight, Yagyuu was the only one that won her fight. Yagyuu was injured trying to save Hibari, but recovered quickly. It is revealed that Yagyuu looks after Hibari because Yagyuu sees a lot of her late sister in Hibari. Hanzou returns to the Academy to discuss the situation with Kiriya and informs him that "it is time to find a successor to the super secret ninja arts". The scroll that contains these arts chooses its owner. Who will it be?

Kiriya takes the girls to Shinobi Island to train. Two more dark shinobis, Mirai and Hikage, attack. As with the other battles, neither Mirai nor Hikage took their battles seriously and left rather abruptly. However, Mirai revealed to Hibari that she is a freshman at the Serpent Academy for Girls, leading Kiriya to inform his students that these dark shinobis are also from that same academy.

As the girls train in summoning animal spirits, Asuka is the only one having trouble summoning hers. Her grandfather, the legendary shinobi Hanzou, comes to visit and informs her that their family's spirit is the tree frog, which Asuka is afraid of. As Asuka attempts to get used to frogs, Hanzou informs Kiriya that the evil Serpent Academy for Girls is behind the puppet attack. On their way home, Asuka and Ikaruga are attacked by one of the enemy shinobi, Yomi.