It premiered on February 2, 2011 by Rhythm Zone and Avex Music Creative Inc. in two physical formats and for digital consumption.

Musically, "Pop Diva" is an uptempo dance-pop tune that heavily incorporates the electronic genre and hip-hop, and is one of few tracks from the parent album to bare this sound.

The lyrical content describes Koda's personality as somewhat of a diva, and also delves into the themes of fame, success and beauty.

Upon its release, "Pop Diva" received positive reviews from music critics, who commended the sound, catchiness and deliveries.

[1][2] It was selected as the third and final single from Dejavu and was released in Japan on 2 February 2011 by Rhythm Zone, a sub-label from Avex Trax.

[4] "Pop Diva" is a "fast-paced" dance-pop song that borrows influences from numerous genres including electropop and hip-hop.

"[9] Structure-wise, Stern then noted; Aided by the same chord progression as Spears' "Gimme More" and a stinging bass beat a la Far East Movement's "Like a G6, "Pop Diva" is Kumi's hottest, noisiest dance affair since 2007’s "But"...

I'm also detecting a touch of Kesha influence–and by that, I mean I could definitely hear this one playing while I upchuck some glitter in the back of a dingy gay bar.

[9] Paige Lim from Straits Times reviewed Koda's Walk of My Live 2015 concert tour, and was positive towards the original versions of "Pop Diva", and "House Party" and "Poppin' Love Cocktails" from Walk of My Life (2015) and Japonesque (2012), respectively; she labelled them "fast-paced, catchy tunes..."[7] A reviewer from CD Journal was positive, commending the production of the song and labelled the composition "impressive".

He commented that "Pop Diva" was a "complete dance tune" for everyone, and commended Koda's "provocative" and "attitude" delivery.

[18] the video opens with Kumi dreaming in a blue room, attached to several cords; a single blood tear streams from her closed eye.

The scene shifts to where she is trying to avoid being hit by lasers and escapes by taking hold of a rope and being hauled away by an airship, much like what was used in the music video for Last Angel, featuring TVXQ.