serizawa asahi, idolmaster, idolmaster shiny colors, highres, 1girl, blue background, blue eyes, cowboy shot, earrings, expressionless, floating hair, from side, jewelry, looking ahead, medium hair, nu (deka dog), partially colored, plaid clothes, plaid skirt, pleated skirt, profile, sailor collar, school uniform, serafuku, shirt, short sleeves, skirt, solo, watercolor background, white background