Ero Ninja Scrolls manga volume 7 features story and art by Haruki.

Forced to flee the city of Ero, Arakusa heads to the Ninja Village with Minauchi to be retrained. On the way, they're attacked by lower-level kunoichi… and the missionary Francesca appears! Will Arakusa, or at least her virginity, survive Francesca's sexy Western training techniques? Back in Ero, Arakusa's ring makes Tokuta's body go berserk! Will Sari have to employ her craft to release him from his building… burden? And is this saga now an NTR story?!