1girl, 2022, o, all_fours, bare_legs, barefoot, blunt_bangs, blush, breasts, brown_hair, character_name, cleavage, collarbone, grey_skirt, happy_birthday, idolmaster, idolmaster_cinderella_girls, igarashi_kyoko, kusaka_io, light_particles, light_rays, looking_at_viewer, medium_breasts, outdoors, plaid, plaid_skirt, pleated_skirt, pool, school_uniform, shirt, side_ponytail, skirt, solo, sunlight, wavy_hair, white_shirt