A member of the Iron Blood whose nickname is "Zed." She's always looking for ways to improve herself, and she's also passionate about research. She's very critical of herself and others, but will always give praise to those who she deems as worthy. She's often found acting as a commander in battle. She was chosen to represent the Iron Blood in the Joint Military Exercise by her peers. She's doing her very best to rise to the occasion and lead her friends to victory.
A gathering of members from each of the nations is held to share information about various technologies. Z23 offers her specialized insight, but Saratoga offers another idea that goes beyond Z23's expectations. Will Z23 be able to keep things in check?