2girls, alternate costume, barefoot, bikini, black bikini, black hairband, blue hair, braid, braided ponytail, breasts, collarbone, feet, feet out of frame, foot out of frame, greatodoggo, hairband, hand under clothes, hand under swimsuit, hololive, houshou marine, implied fingering, large breasts, legs, looking at another, medium breasts, minato aqua, multicolored hair, multiple girls, navel, open mouth, pool, purple eyes, purple hair, red eyes, red hair, rolling eyes, sitting, smile, stomach, swimsuit, teeth, toenails, toes, tongue, twintails, underboob, upper teeth only, virtual youtuber, yuri