HERO is expected to be Utada Hikaru's 17th Japanese single (22nd overall), with Boku wa Kuma serving as an already confirmed song on the single. Details on the exact track listing are not yet confirmed. However, according to the Copycat Forum [1], the single will have six tracks on it (including instrumentals), her highest since Hikaru's hit #1 single, Wait & See ~Risk~. The single itself is currently expected to be out in early November, just a matter of months after Hikaru's last studio effort, ULTRA BLUE, and only two months after the end of her tour, UTADA UNITED. [2]

Hikaru was reported as saying that "Boku wa Kuma" is her first time writing a children's television song. She is also reported as being confident with this cheerful but gentle song for the NHK kid's show in Japan which will air throughout October and November using Hikaru's song as its theme. Details as to whether Boku wa Kuma will be the lead A-side, a potential other A-side, or a B-side on the single have not yet been disclosed.