Maken-ki!: Doki Doki! Maken-ki! Himitsu no Kunren
Special · Winter 2011
Ecchi
A series of specials included in the 'Valkyrie Drive: Mermaid' DVD/BD volumes.
Special · Winter 2011
Ecchi
TV · Fall 2018
Ecchi · Action
TV · Summer 2011
Ecchi · Action
Special · Spring 2014
Ecchi