1boy, 1girl, ahoge, bare_arms, bare_legs, bikini, black_bikini, black_hair, black_male_swimwear, blue_eyes, breasts, brother_and_sister, cleavage, closed_mouth, collarbone, couple, eye_contact, flower, front-tie_bikini_top, front-tie_top, frown, hair_flower, hair_ornament, hand_on_another's_hip, hand_on_another's_knee, hetero, holding_hands, koruri, long_hair, looking_at_another, male_swimwear, medium_breasts, navel, neko_to_wakai_seyo!, outdoors, poolside, red_flower, ribbon, shiny_skin, short_hair, siblings, side-tie_bikini_bottom, sitting, smile, soaking_feet, strapless, strapless_bikini, sunlight, swimsuit, white_flower, white_hair, white_ribbon, yasaka_kanon, yasaka_yuuki