It was released on July 26, 2023, through Universal Sigma in five editions: a two-CD release with an instrumental disc, streaming, the Vocalo Zanmai 2 First Limited Grand Concert Edition with the Vocalo Zanmai 2 Tour Blu-ray, the First Limited vs Edition with bonus Baki Hanma collectibles, and the Shin Yaeryu (FC Limited) Edition box set, which combines all physical media editions with an extra DVD.

I vs I is the band's first original studio release since Tokyo Singing in 2020.

6 on Oricon's albums chart.

[5] All tracks are arranged by Wagakki Band.

(The choruses on track 11 are performed by all the members together)