a-ka, hatsune miku, kagamine len, kagamine rin, kaito (vocaloid), meiko (vocaloid), vocaloid, bad id, bad pixiv id, 2boys, 3girls, ahoge, aqua eyes, aqua hair, beach, blonde hair, brown eyes, brown hair, detached sleeves, grin, hair ornament, hair ribbon, hairclip, headphones, long hair, m/, midriff, multiple boys, multiple girls, ocean, ribbon, short hair, siblings, skirt, smile, twins, twintails, v, wading, water