ArtistC9 Entertainment
Kaisei
Kaisei (카이세이) brings an immediate point of difference to NAZE. Born March 30, 2004, in Osaka, Japan, he is the oldest member in C9's seven-member multinational rookie team and one of the clearest signs of the group's Korea-Japan strategy. His official member profile confirms Osaka as his hometown, while the rest of his rollout has leaned into the poised, performance-first image that made him stand out before debut.
Inside NAZE, Kaisei's lane is easy to read: a dancer with mature stage presence and a steadier energy than the younger members around him. The current HITKULTR credit stack already shows why that matters. He is tied to the group's pre-debut acting push through DREAM STAGE and to the run of songs that surrounded it, giving him more than a placeholder trainee page even before NAZE's first official release lands.
That makes Kaisei one of the more interesting rookie profiles in C9's current system. Between the Japanese hometown, eldest-member role, and performance-led identity, he is positioned less as a blank-slate trainee and more as a visible pillar in NAZE's launch campaign. If the group's May 2026 debut converts its early attention into sustained fandom, he should be one of the members best placed to benefit from that momentum.
1 articles5 creditsDebut: May 1, 2026Japanese
Fans Also Ask
Who is Kaisei from NAZE?
Kaisei is a member of NAZE, the seven-member rookie boy group being launched by C9 Entertainment. His official profile lists his birthday as March 30, 2004 and confirms Osaka, Japan as his hometown. He is widely framed as the group's oldest member and one of its strongest dance-focused performers.
Is Kaisei Japanese?
Yes. NAZE's official member profile identifies Kaisei as being from Osaka, Japan, and HITKULTR lists his nationality as Japanese. That background is central to NAZE's positioning as C9 Entertainment's first multinational boy group, with members recruited across more than one market instead of a Korea-only lineup.
How old is Kaisei in NAZE?
Kaisei was born on March 30, 2004. That makes him one of the older members in NAZE and gives him a slightly more mature place in the team's dynamic. In rookie groups, age order often shapes leadership tone and group chemistry even when another member handles the formal leader role.
What credits does Kaisei already have before debut?
Kaisei already has a visible pre-debut credit trail through <em>DREAM STAGE</em> and the connected OST releases that surrounded the show. HITKULTR currently tracks the drama plus songs including "Wanderlust," "BABYBOO," "Little Star," and "Isn't She Lovely?". That gives his page real activity before NAZE's formal debut arrives.
Where can fans find Kaisei's official profile?
The cleanest official source is Kaisei's dedicated member page on NAZE's official Japanese site. Fans can also follow NAZE's official Instagram, X, YouTube, and TikTok accounts for group updates. At this stage of the rollout, those group channels are the primary verified outlets connected to his public profile.
