sensei ga oshiete ageru, silver hair, 2girls, ball, bandeau, beach, beachball, bikini, blonde hair, blue eyes, blue one-piece swimsuit, blush, cliff, coconut, day, from side, hair ribbon, hairband, long hair, multiple girls, navel, one-piece swimsuit, open mouth, outdoors, parted bangs, pink eyes, ribbon, school swimsuit, side-tie bikini bottom, sitting, sky, smile, sun, swimsuit, water, wet, white bikini