omotxy, kiryuuin satsuki, matoi ryuuko, kill la kill, absurdres, highres, 2girls, aqua background, bikini, black bikini, black hair, blue eyes, breasts, copyright name, full body, hand on own hip, hat, holding, holding swim ring, innertube, long hair, multicolored hair, multiple girls, red streaks, sandals, short hair, siblings, sisters, smile, streaked hair, sun hat, swim ring, swimsuit, thick eyebrows, white bikini