Can I use Hatsune Hatsune if I don't know Hatsune Hatsune?

Of course. According to relevant public information, Hatsune Miku is a sound source library, with a very sweet and lovely image, which is loved by many young people and will not be infringed when used as an avatar. Hatsune Miku is a sound source library developed by CRYPTONFUTUREMEDIA based on Yamaha's VOCALOID series speech synthesis program.