2girls, ass, beach, bikini, black_bikini, black_hair, brown_eyes, brown_hair, cellphone, cowboy_shot, from_behind, hat, heart, himekaidou_hatate, holding, holding_phone, long_hair, looking_at_viewer, looking_back, maccha_xxxxxx, marker_(medium), multiple_girls, nail_polish, ocean, open_mouth, outdoors, phone, pointy_ears, pom_pom_(clothes), purple_bikini, purple_headwear, purple_nails, red_eyes, red_headwear, red_tassel, sample_watermark, shameimaru_aya, smartphone, swimsuit, teeth, tokin_hat, touhou, traditional_media, twintails, upper_teeth_only, watermark