Do you know what vocaloids are?

It is mechanical voice fromThey are a computer generated voices developed in Japan.

I like the vocaloid Kasane Teto from it.

My favorite song from sher is "Override" fromby Yoshida Yasei.

Do you know about vocaloids?

It is mechanicalThey are computerized voices from Japan.

mechanical brings to mind things like engines and gears. Something like vocaloid would be described as "computerized voices" (or very informally "computer voices")

I like Kasane Teto from it.

The context is implied by the previous sentence.

My favorite song from sheof hers is "Override" fromby Yoshida Yasei.

Do you know vVocaloid?

Strictly speaking, "Vocaloid" should be capitalised as it is the name of a product.

It is mechanical voicea voice synthesiser from Japan.

Vocaloid is what is known as a voice synthesiser.

I like the Vocaloid Kasane Teto from it.

"From it" isn't suitable here. Kasane Teto doesn't "come from" Vocaloid; she is one.

My favorite song from seaturing her is "Override" fromby Yoshida Yasei.

(1) Kasane Teto didn't write the song, so "from her" isn't accurate; she merely features in it.
(2) When naming the artist behind a song or any piece of art in general, we'd typically use "by" instead of "from".

It is mechanicala computer-generated voice from Japan.

My favorite song from sby her is "Override" fromwritten by Yoshida Yasei.