The class members travel to Shinobi Island, a training ground used by shinobi for centuries. Upon their arrival, they are tasked with cleaning the boarding house, where Hibari discovers the written aspiration of a past student to become a "Super-ninja."
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- Japanese Name: "Rinkai Shugyō Shinobitō" (臨海修行・忍島)
- Opening Theme: "Break your world" by Sayaka Sasaki
- Ending Theme: "Yamiyo wa Otome wo Hana ni Suru (闇夜は乙女を花にする)" by Eri Kitamura, Ai Kayano, Ryoko Shiraishi, Saori Goto), Megumi Toyoguchi
- Eyecatches: The eyecatches for this episode feature Asuka, Mirai and Hikage: