Super Robot Taisen OG Saga: Endless Frontier

Overview

begins with an introduction to the Endless Frontier, explaining a brief history of the world and the crossgates. The game opens up with Haken Browning and Aschen Brödel outside of the Mai Tierra, they enter and explore what remains of the ruins, with debris being cleared away with Haken's Night Fowl, until they come across a large security locked doorway. Haken becomes nostalgic as he remembers that it had been 23 years since he had last been there, after a brief talk with Aschen he orders her to open the door. Unfortunately the password mechanism proves to be too complex for Aschen to hack so she asks Haken to use her "password cracking subprogram". He reluctantly agrees, and it is revealed that it was an overdrive mode that gives her a tremendous power boost, but also creates a personality split from stern and stoic young women to a hyperactive teen. Using her new strength, she literally tears down the door and they proceed onwards...then a adventure begins to unfold

Source: AniList