Hatsune Miku:

Years ago was a masterpiece of musical synthesis
software that was able to inspire people when
she sang as a humanoid robot.

She was only able to sing, dance a bit, and talk a bit.

She’s affordable for a humanoid robot but she’s still
expensive.

Yowane Haku:

At a consumer electronics shop, she fell in love with Miku
at first sight, and thought it would be a good idea to make
music. But she wasn’t able to make good music with Miku
and so Yowane Hapuked.

A lifestyle living with Miku is difficult.

“Yowane Haku” is a handle name.