Valkyrie Drive: Mermaid (2015)
S1E1 I'm Getting Deflowered
Episode Overview
Mamori Tokonome, a girl with a bodily irregularity, finds herself captured by agents and taken to a remote island called Mermaid. There, she encounters two girls, Miyasato and Kouzuki; Miyasato, a Liberator, provokes Kouzuki, an Exter, to morph into a weapon known as a Liberator Arm. Just in time, Mirei Shikishima arrives to defend Mamori, transforming her into a sword so she can defeat Miyasato and Kouzuki and escape into the jungle. They soon reach a white castle, where they are ensnared in a coliseum and face another Liberator, Saejima, who employs a masochistic slave girl to unleash a ball-and-chain Liberator Arm. As they find themselves in a tight spot, Mirei once again channels arousal to turn Mamori into the sword Liberator Arm, enabling her to swiftly conquer Saejima.