1girl ai-generated arm_support bad_id bad_twitter_id beach bikini blurry blurry_background blush brown_hair cameltoe collarbone flat_chest frilled_bikini frills green_jacket hair_bun halterneck highres idolmaster idolmaster_cinderella_girls jacket jefp2nd looking_at_viewer navel orange_bikini outdoors side-tie_bikini_bottom single_hair_bun solo swimsuit takamori_aiko