siyumu, cirno, touhou, commentary request, highres, 1girl, blue bow, blue dress, blue eyes, blue hair, bow, bowtie, bus, cirno's perfect math class, collared shirt, detached wings, dress, gap (touhou), grin, hair bow, holding, holding microphone, ice, ice wings, looking at viewer, microphone, motor vehicle, one eye closed, pinafore dress, puffy short sleeves, puffy sleeves, red bow, red bowtie, shirt, short sleeves, sleeveless, sleeveless dress, smile, solo, sparkle, w, white shirt, wings