A [Regular Edition]

"Rocketeer" is a perfect title song for INI's debut single. The members' powerful and synchronized shout in the chorus gives the soul to this song. Hiromu Takatsuka's remarkable long shout on the end of the bridge is also one of the highlight of this song. In contrast with "Rocketeer", "Brighter" is a beautiful ballad with captivating piano intro. There's a subtle sense of sadness in the melody, which combines beautifully with hopefulness. As the group's first ballad number, it nicely showcases the vocal ability of the members. "Cardio" is another upbeat song in this single. Some repetitive parts with high notes make this song a catchy one which will easily stuck in your head after listening to it. Last but not least, there's this mid-tempo, easy-listening song, "KILLING PART". This sweet love song shows another side of INI. It's light, fun, groovy, and bright, a kind of song which can make you simply smile just by listening to it. Two of the members, Masaya Kimura and Hiroto Nishi, created the choreography for this song. Overall, "A" is a promising debut single for INI. The variety of the songs in this single makes it an interesting set to listen to, which shows lots of potential INI has as a global boys group.