Gira Gira Now!

Gira Gira Now! (ギラギラ！) is Misaka Mikoto and Shirai Kuroko's duet for the Toaru Kagaku no Railgun anime sung by their Japanese voice actors  and.

It appears as the second track on the Toaru Kagaku no Railgun Archives 3, and was released on July 30, 2010.