Original video animations (OVA) that came with the blu-ray / DVD releases.

Girls study at schools for modern shinobi. They dedicate their entire young lives to learning to become true shinobi, battling each other to polish...

Asuka, Ikaruga, Katsuragi, Yagyu and Hibari are five school girls who secretly train in the ninja arts. As they are sent by their mentor, Kiriya, to...

As the girls train in summoning animal spirits, Asuka is the only one having trouble summoning hers. Her grandfather, the legendary shinobi Hanzou,...

Yomi engages Ikaruga in battle and overwhelms her with her array of weapons before taking her leave. Later, Ikaruga is informed that her brother,...

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...

The dark shinobis from the Serpent Academy receive new orders to make an attack on Hanzou Academy. Haruka, the puppeteer, sets up puppets to distract...

The battles from the last episode continue. Mirai loses her battle against Yagyuu, causing the Linked Shinobi Barrier to become weaker and the dark...

A woman named Daidouji, a "legendary senior" who has been repeating class at Hanzou Academy of her own accord despite passing the finals, convinces...

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...

Under Haruka's control, Hibari knocks out Kiriya and steals the Yang scroll. The next day, Haruka appears before Hibari and retrieves the scroll from...

Having overheard Kiriya's conversation with Rin, the group make plans to travel to Serpent Academy, with Hanzou giving his approval despite Kiriya's...

Ikaruga decides to face Yomi alone whilst the others press onwards whilst Rin, after a brief talk with Hibari, breaks free from her cell. Yomi...

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...