dt 777 tb, asu (sinsekai), kamitsubaki studio, sinsekai record, commentary request, highres, official art, second-party source, 2girls, beach, bema (sinsekai), black one-piece swimsuit, breasts, brown eyes, cellphone, cleavage, cloud, cloudy sky, cowboy shot, day, earrings, frilled one-piece swimsuit, frills, hair ornament, hand on own hip, headphones, headphones around neck, holding, holding phone, holding umbrella, holding water gun, jewelry, long hair, looking at viewer, medium breasts, multiple girls, ocean, one-piece swimsuit, outdoors, parted lips, phone, pink hair, sky, solo focus, sweat, swimsuit, umbrella, very long hair, virtual youtuber, water gun