This Elfen Lied OVA sits inside the events of the series' eleventh episode and centers on Nana, the Diclonius girl now living awkwardly under Kouta and Yuka's roof. Set on luring the harmless, childlike Nyu to Bando so he can kill her, Nana cannot reconcile this gentle girl with Lucy, the killer she hates. When Nyu collapses on their walk, Nana's resolve fails her. A side-story episode, not a standalone entry point.