serino itsuki, z/x, official art, 1girl, blue bow, bow, bow swimsuit, braid, copyright notice, covered navel, dragon tail, feathered wings, flower, green eyes, grey hair, hair flower, hair ornament, leaf hair ornament, long hair, looking at viewer, lyrph (z/x), name tag, open mouth, pink flower, pink petals, pool, rainbow ribbon, red flower, red rose, rose, school swimsuit, side braid, single braid, solo, sparkle, swimsuit, tail, white wings, wings