Gazing at a reproachful and exasperated Tilly, Roland somehow felt his little sister was pretty cute in a way. Tilly rarely called him brother when she was in a good mood. She only did so in the presence of others or when she was really annoyed like now. Roland suddenly had an urge to tease her.
"Ahem, this isn't right," Roland thought, hastily turning his lack of attention into a hacking cough. "The plane isn't complete yet. Anna and Soraya have to make every part manually. As the war is around the corner, they have a lot of work to do. You should know it better than anyone else. I did draft the plan a long time ago, but I can't suit the action to the drawing just by myself."