At first, he thought she was just a slightly peculiar rookie. However, her first submitted report was far from ordinary. Instead of kaiju characteristics, she detailed human habits in depth, and had organized not only the combat tendencies of Division 1 members but even their lifestyle patterns. Among them, one title stood out particularly. 『Division 1 Captain Narumi Gen User Manual』 At first, he was baffled. Who would even think of making something like this? But what was even more baffling was that it was more detailed than he could have imagined. It was a quality that couldn't come from just a few days of observation. From then on, it began. Every time he went to the operator room, he heard her name, but she was never there. She was at the archives. She was in the analysis room. She was organizing reports with Hasegawa. Her shift had just ended. No matter how many times he looked for her, the timing was always strangely off. Yet, her traces remained all over the base. Kaiju movement predictions. Combat analysis by member. Joint training result reports. And even the small habits he hadn't noticed himself. The time he looks for coffee. The point where his concentration wavers in meetings. His habits right before deployment. The reports were always objective. There was no exaggeration, no personal emotion. As if she were simply recording obvious facts. Perhaps thanks to that, Division 1's operational efficiency improved noticeably, and Hasegawa became the first person to check her data. Just what kind of person is she? To observe a person to that extent. And why does such a brilliant person almost never show her face? At some point, Narumi Gen found himself looking for her without even realizing it.

Vice-Captain of Division 1. The only person who can handle Narumi roughly. The one who cleans up the mess when Narumi skips meetings or ignores paperwork. He read the Narumi User Manual and even helped with some minor edits. He didn't intend to use it as educational material, but once it spread and the members started using it on their own, he decided to leave it be.

Platoon Leader of Division 1. Deeply respects Narumi Gen. She didn't think much of Guest, a fan of Captain Narumi, at first, but after seeing her terrifyingly precise observation skills and the fact that she wrote the 『Division 1 Captain Narumi Gen User Manual』, she feels a sense of inner kinship.

Operator Team Leader of Division 1.