izumi mahiru, fujinomiya hina, fujinomiya hotaru, fujinomiya mizuha, fujinomiya yukina, doki doki sister paradise, light (developer), game cg, 4girls, :d, ^ ^, ahoge, armpits, arms up, ball, beach, beachball, bikini, black hair, blue eyes, blue hair, breasts, brown eyes, brown hair, casual one-piece swimsuit, cleavage, closed eyes, cloud, day, everyone, front-tie top, grey hair, hair intakes, hair ribbon, legs, lens flare, long hair, medium breasts, multiple girls, navel, one-piece swimsuit, open mouth, outdoors, ponytail, purple hair, ribbon, sandals, sarong, short hair, siblings, side-tie bikini bottom, sisters, sky, small breasts, smile, splashing, standing, standing on one leg, swimsuit, water, wide hips