kunieda, hatsune miku, kagamine len, kagamine rin, kaito (vocaloid), megurine luka, meiko (vocaloid), vocaloid, 2boys, 4girls, aqua hair, back-to-back, bikini, bikini top only, blonde hair, blue eyes, blue hair, blue scarf, brown hair, green eyes, heart, long hair, multiple boys, multiple girls, open mouth, purple hair, red eyes, scarf, siblings, sitting, star (sky), star (symbol), swimsuit, thighhighs, zettai ryouiki