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Masami
ArtistEDEN Entertainment

Masami

Masami (마사미), born Akiba Masami (秋葉正美) on April 14, 2005, is the Japanese rapper in ALL(H)OURS, the seven-member boy group launched by EDEN Entertainment. He entered the public rollout in late 2023 and officially debuted with the group on January 10, 2024 through the first mini album All Ours, immediately giving the lineup a sharper rap color and a direct bridge to Japanese fans following the team's early rise.

Masami's value inside ALL(H)OURS is straightforward. He brings attack and pace. The group's music leans on performance pressure, chant-ready hooks, and hard-edged transitions, and his delivery helps lock that structure in place. As the only Japanese member, he also adds a distinct identity point within a group that has moved quickly from rookie introduction to a deeper mini-album run.

That catalog has already built real weight. Since debut, Masami has appeared across All Ours, Witness, Crisis, Phantom, and 2026's No Doubt, giving him a clean through-line across every official ALL(H)OURS release so far. For fans tracking the group's growth, his page is less about solo detours and more about the way he helps define ALL(H)OURS' core performance identity in real time.

1 articles5 creditsDebut: January 10, 2024Japanese

Gallery

Discography

2026
No DoubtMini Album
2025
PhantomMini Album
2024
CrisisMini Album
2024
WitnessMini Album
2024
All OursMini Album

Fans Also Ask

What is Masami's real name and where is he from?
Masami's real name is Akiba Masami (秋葉正美). He was born on April 14, 2005, in Osaka Prefecture, Japan. He is the sole Japanese member of ALL(H)OURS.
What is Masami's role in ALL(H)OURS?
Masami is a core rapper and dancer in ALL(H)OURS. He is known for his powerful stage presence and sharp freestyle instincts, which distinguish him within the group's dynamic rap lineup.
When did ALL(H)OURS debut?
ALL(H)OURS debuted on January 10, 2024, under EDEN Entertainment with their first mini album All Ours. The group followed up in July 2024 with their second mini album WITNESS.
What is the ALL(H)OURS fandom name?
The official fandom name for ALL(H)OURS is Min(ut)e. It reflects the intimate, moment-to-moment connection between the group and their fans.
What are ALL(H)OURS known for musically?
ALL(H)OURS are known for blending genre-defying beats with raw emotional storytelling. Their sound incorporates hip-hop, R&B, and alternative elements under the EDEN Entertainment label, which is home to artists like Paul Kim and EDEN himself.

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