The seventh volume has an extra Blu-ray/DVD installment, episode 13, which showcases a distinctive "Pink Night" plot. Kakeru and his comrades undergo a transformation and adopt new aliases as the "Pink Ero-Rangers," rather than their customary alter-egos as the Black Knights. Lisolette assumes the role of a bondage driver, while the team's abilities are imbued with sensual overtones. For instance, Kakeru acquires X-ray vision, Yuka can transmute boys into girls, and Misuzu's swords acquire a vibrating feature. Kukuri's utterances are restricted to vulgar language and illustrations, and Takahisa has the capability to produce spurts of water from his fingers. It should be emphasized that this episode is a lighthearted parody and has no connection to the primary storyline.