1girl, ;d, arm_support, ball, beachball, bikini, blush, breasts, cleavage, collarbone, green_hair, halterneck, idolmaster, idolmaster_million_live!, karua_(karua23), lens_flare, light_rays, looking_at_viewer, medium_breasts, nagayoshi_subaru, navel, one_eye_closed, red_eyes, shading_eyes, smile, solo, string_bikini, striped, striped_bikini, swimsuit