1girl, ahoge, b1ack_illust, bare_shoulders, bikini, blue_neckerchief, blue_ribbon, blue_sailor_collar, blush, breasts, brown_eyes, brown_hair, collarbone, cowboy_shot, dot_nose, hair_ribbon, hakozaki_serika, hand_up, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, long_hair, looking_at_viewer, navel, neckerchief, one_eye_closed, open_mouth, outstretched_arm, ribbon, sailor_bikini, sailor_collar, sailor_swimsuit_(idolmaster), simple_background, small_breasts, smile, solo, standing, swimsuit, twintails, very_long_hair, white_background, white_bikini