Chika, is a Japanese female vocal for Vocaloid 3.
Her vocal is sampled from Chiaki Ito, Japanese model and member of the Japanese pop band AAA.
This was later confirmed to be caused by the addition of approx 200 triphonemic sounds.
[2] Noboru confirmed that she has the most triphones out of their Japanese vocals.
She can cover rock songs due to her solid and stable bass.