2girls, o, >_<, @_@, ahoge, arm_up, ass, bare_arms, bare_legs, bare_shoulders, bikini, black_hair, blue_bikini, blush, braid, brown_eyes, casual_one-piece_swimsuit, cellphone, colored_inner_hair, dodo24850918, flat_ass, flat_chest, flower, frilled_bikini, frilled_one-piece_swimsuit, frills, grey_hair, hair_flower, hair_ornament, hat, hat_flower, heart, heart_in_mouth, holding, holding_phone, jewelry, looking_at_viewer, looking_back, low_twintails, midriff, multicolored_hair, multiple_girls, multiple_views, navel, nose_blush, one-piece_swimsuit, onii-chan_wa_oshimai!, open_mouth, oyama_mahiro, pendant, phone, pink_bikini, pink_hair, ponytail, purple_hair, siblings, side_braid, simple_background, single_braid, sisters, smartphone, sun_hat, swimsuit, twintails, two-tone_hair, yellow_one-piece_swimsuit