4girls, q, ass_visible_through_thighs, bad_pixiv_id, bare_arms, bare_shoulders, beach, bikini, blue_eyes, blue_sky, blush, breasts, chibi, cloud, crab, frilled_bikini, frills, green_bikini, green_eyes, green_hair, green_ribbon, hair_between_eyes, hat, hat_ribbon, heart, heart-shaped_eyewear, holding, holding_water_gun, innertube, kaenbyou_rin, kiramarukou, komeiji_koishi, komeiji_satori, looking_at_viewer, medium_breasts, midriff, multiple_girls, navel, ocean, outdoors, raised_eyebrow, reiuji_utsuho, ribbon, short_hair, sky, smile, solo_focus, standing, straw_hat, striped, striped_bikini, sunglasses, sunlight, swimming, swimsuit, thighs, third_eye, tongue, tongue_out, touhou, tree, water, water_drop, water_gun