1girl ? ascot balloon bangs black_hair blunt_bangs blush breasts collarbone dated detached_collar dress dutch_angle happy_birthday heart heart_balloon highres idolmaster idolmaster_cinderella_girls lens_flare looking_at_viewer pink_shawl purple_eyes sgawarananto shawl shirayuki_chiyo short_hair small_breasts solo sparkle strapless strapless_dress thighhighs two-tone_dress white_ascot white_thighhighs