2girls, alternate_costume, bikini, blonde_hair, blue_eyes, brown_hair, clear_sky, closed_eyes, cloud, collarbone, day, frilled_bikini, frills, maribel_hearn, multiple_girls, nama_udon, no_headwear, ponytail, sky, smile, splashing, squatting, summer, swimsuit, touhou, usami_renko, water