MW is the name used by more than one act, but the entry here refers to the Japanese doujin music project associated with Rêvasser. It is a video game arrangement act focused on unofficial fan-made music, with work connected to games and graphic novel series.

The project is a Japanese pop act with doujin ongaku and hardcore associations, and it is linked to female vocal performance. The name also appears in relation to Rêvasser as a solo or project identity.