otsudou, serizawa asahi, idolmaster, idolmaster shiny colors, highres, 1girl, aqua eyes, arm up, belt, black mask, black shirt, blue background, blush, bracelet, cable, chain, chromatic aberration, collared shirt, electric guitar, fishnet socks, fishnets, gibson les paul, green skirt, grey hair, grey necktie, grin, guitar, guitar strap, hand on own hip, instrument, jewelry, kneehighs, looking at viewer, mask, mask pull, medium hair, mouth mask, multicolored hair, multiple bracelets, necktie, official alternate costume, pleated skirt, pocket, purple streaks, shirt, simple background, skirt, sleeves rolled up, smile, socks, solo, streaked hair, thigh belt, thigh strap, three-quarter sleeves, w, w over head