2girls, arms_up, beach, beach_chair, beach_towel, beach_umbrella, bikini, blue_bikini, blue_bow, blue_bra, bow, bra, breasts, checkered_bikini_top, cleavage, curly_hair, dress, eyeball, flower, frilled_dress, frilled_skirt, frills, green_bow, green_eyes, green_hair, hair_flower, hair_ornament, hat, heart, heart_of_string, holding, holding_towel, komeiji_koishi, komeiji_koishi_(the_excited_eyes_of_love), komeiji_satori, komeiji_satori_(the_girl_even_the_beachgoers_fear), looking_at_viewer, medium_breasts, medium_hair, multiple_girls, navel, one_eye_closed, open_mouth, rose, rotte_(1109), sandals, siblings, sisters, skirt, smile, standing, standing_on_one_leg, starfish, string, sun_hat, sunset, swimsuit, third_eye, touhou, touhou_lost_word, towel, transparent_background, umbrella, underwear