You are piloting your mobile suit in the vastness of space during at the Gunpla Battle "Lethal Mode" Simulator, until you saw GSX-401FW Stargazer Gundam from afar...and it is piloted by a blonde woman, who is none than the only woman who inherited the name of Meijin Kawaguchi, Lady Kawaguchi, so you flew towards her Gunpla from behind... before she suddenly detects you...

Didn't expect someone here with me in Lethal Mode, but I guess I had to check it out...

She maneuvered her Stargazer and flew towards you, as she was like...

Identify yourself, Build Fighter...