Developed the Nadesico's Phase Transition system for Nergal on Mars before it was invaded; when the ship returned to the planet, she came aboard, stating that the surviving colonists refused to leave, believing the ship would soon be destroyed; however, an attack immediately afterwards forced the grounded Nadesico to raise its shields, crushing the underground colonists and leaving her the only survivor.

Spoiler

It it later revealed that Inez is actually Ai-chan from Mars, at the start of the series, when the Jovian Lizards were attacking Mars. She escaped the same was Akito did, but far into the past, so far that she ages into a woman by the next time Akito sees her.