ArtistEDEN Entertainment
Masami
Masami (마사미), born Akiba Masami (秋葉正美) on April 14, 2005, is a Japanese singer-rapper in the seven-member boy group ALL(H)OURS under EDEN Entertainment. Alongside Xayden and Hyunbin, he is one of the group's core rappers, as confirmed during the Hello Ours pre-debut showcase.
Masami was formally introduced as a member of the upcoming group on November 28, 2023, and debuted with ALL(H)OURS on January 10, 2024, with the first mini album All Ours. He is the group's sole Japanese member, adding an international dimension that connects the group to fans across Japan. The group is fandom-named Min(ut)e, a portmanteau reflecting the idea that fans make up the minutes that define ALL(H)OURS.
Since debut, Masami has appeared on all five of ALL(H)OURS' mini albums: All Ours (2024), Witness (2024), Crisis (2024), Phantom (2025), and No Doubt (2026). His stage presence, technical rap delivery, and vocal color give ALL(H)OURS a distinct textural contrast within the group's performance.
1 articles5 creditsDebut: January 10, 2024JP
Gallery
Discography
2026
No DoubtMini Album
MemberALL(H)OURS
2025
PhantomMini Album
MemberALL(H)OURS
2024
CrisisMini Album
MemberALL(H)OURS
2024
WitnessMini Album
MemberALL(H)OURS
2024
All OursMini Album
MemberALL(H)OURS
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.
