takahashi hideki, senomiya akiho, yashio kaito, kidou battle gunvarrel, robotics;notes, science adventure, absurdres, highres, official art, 1boy, 1girl, anime coloring, blazer, blue jacket, blue sailor collar, bow, brown eyes, brown hair, chest bow, chuo tanegashima high school uniform, clenched hands, jacket, mecha, open mouth, red bow, red eyes, red hair, robot, sailor collar, school uniform, short hair, smile, winter uniform