Hatsune miku goes swemo

I don’t even know what this means. Can you expand? 

I don’t even know what this means. Can you expand? 

I thought he was describing a type of sushi .

Here's her design in most official media

In recent years, she's become famous in not just Japan but all over the world and has been in various collabs with popular media franchises

Hatsune Miku is a vocaloid, which is essentially a digital instrument that does not only produce sounds, but also mimic words in several languages. Therefore the program is very popular to be used for making original music or remix existing music (such as OP’s example of MCR and Taylor Swift).

Beyond that, Miku has gone on to become famous worldwide as a “virtual idol,” where people pretend that she is a real, digitized person with a personality of her own.