miya-chan (lightning0730), firefly (honkai: star rail), robin (honkai: star rail), honkai: star rail, honkai (series), absurdres, commentary request, highres, 2girls, alternate costume, arm rest, bikini, black bikini, black hairband, blue eyes, blue hair, blue slingshot swimsuit, breasts, breasts apart, building, cellphone, city lights, closed mouth, cowboy shot, earrings, gradient hair, grey hair, hair ornament, hairband, halo, head wings, holding, holding phone, jewelry, large breasts, long hair, looking at viewer, multicolored hair, multiple girls, navel, night, night sky, outdoors, parted lips, partially submerged, partially underwater shot, phone, pool, side-by-side, signature, single earring, sky, skyscraper, slingshot swimsuit, smartphone, smile, string bikini, swimsuit, thigh strap, very long hair, water, wet, white wings, wings