a-ya (a ya p), kisaragi chihaya, idolmaster, idolmaster (classic), idolmaster million live!, commentary request, highres, 1girl, black necktie, blue hair, blue jacket, brown eyes, closed mouth, dated, eighth note, floating hair, hairband, holding, holding microphone, jacket, lapels, layered skirt, light smile, long hair, microphone, musical note, necktie, official alternate costume, plaid clothes, plaid jacket, plaid skirt, simple background, skirt, sleeveless, sleeveless jacket, solo, standing, striped clothes, striped wrist cuffs, upper body, white background, white skirt, wrist cuffs