Jinki:Extend - Sorekara  

Jinki:Extend Episode 13, Jinki:Extend OVA, ジンキ・エクステンド 第13話 「それから」, ジンキ・エクステンド OVA, Jinki:Extend - And Then..., ジンキ・エクステンド それから

A young girl named Aoba enjoys constructing robot models as a hobby. She resided with her grandmother until her passing, after which she was kidnapped and transported to a concealed facility. There, she stumbled upon an enormous robot that is piloted by the robots in The Grand Savanna's battles against Ancient-Jinki. However, the true purpose behind these fights remains hidden. Aoba diligently works at the base with the hope of one day being able to pilot a robot and uncover these secrets.