"Your Best Friend" is the single by Japanese singer-songwriter Mai Kuraki.

It was released on 19 October 2011 through Northern Music, as the third single from her tenth studio album Over the Rainbow.

Cancemi, a Japanese-Italian, is also behind the song "Doshite Sukinandaro", a song by Cancemi's solo project Nerdhead (on Universal Music Japan label), which featured Kuraki on vocals.

This song was launched on Space Shower TV and bayfm Chiba two weeks before its official release.

[citation needed] All lyrics are written by Mai KurakiThis 2010s Japanese single-related article is a stub.