kumichou (kumichoubox), charlotte e. yeager, gertrud barkhorn, sakamoto mio, strike witches, world witches series, bad id, bad pixiv id, 3girls, :<, afloat, ass, bikini, black hair, blue eyes, blush, breasts, brown eyes, brown hair, cleavage, diving mask, eyepatch, goggles, grin, hair ribbon, innertube, looking back, lying, medium breasts, multiple girls, on back, orange hair, ponytail, ribbon, small breasts, smile, snorkel, swim ring, swimsuit, twintails, water, wet