1girl, arm_garter, arm_up, armpits, bad_pixiv_id, bare_shoulders, beach, bikini, bikini_skirt, blonde_hair, blue_archive, collarbone, day, eyewear_on_head, frilled_bikini, frills, hair_ornament, halo, halterneck, hifumi_(blue_archive), hifumi_(swimsuit)_(blue_archive), long_hair, looking_at_viewer, low_twintails, navel, ocean, official_alternate_costume, open_mouth, outdoors, round_eyewear, side-tie_bikini_bottom, smile, solo, stomach, string_bikini, sunglasses, sunlight, swimsuit, thighs, twintails, wet, white_bikini, yellow_eyes, yulha_06