Valkyrie Drive: Mermaid (2015)

S1E9 Takeover

Momoka makes her entrance at Mermaid as a new transfer student, quickly showcasing her Exter skills and integrating into Charlotte's Adel team. She soon figures out Akira's real gender and cunningly pushes Charlotte into a showdown with Akira to reveal the secret. Sensing the potential of Momoka's abilities, Akira activates her powerful Artificial Arm, Sri, to fight against Charlotte and Momoka, ultimately emerging victorious. However, Momoka unleashes her own formidable strength as a third-generation Artificial Arm, overpowering Akira and publicly revealing her gender, while urging Charlotte to assume leadership at Mermaid. Meanwhile, Mamori and Mirei stumble upon the devastated Atelier Torino.