
Photo: Nesnad · CC BY-SA 4.0 · credits
Keisuke Ogihara
Person · male · Finland · Tokyo · born 1975
Japanese rapper
Also known as ILMARI
Timeline
1970s
Biography
Biography
Keisuke Ilmari Ogihara (荻原イルマリ恵介, Ogihara Irumari Keisuke) (born June 17, 1975) is a Japanese rapper and member of the hip hop group Rip Slyme.
Career
Ilmari attended the same primary and middle school as Ryo-Z. During this, they became the founding members of Rip Slyme. After relocating schools, Ilmari then left to seek international schooling. While studying internationally, he met fellow Rip Slyme member Pes. Quitting school in the middle of his final year, he returned to Tokyo, reunited with Ryo-Z and formed "Gibinibanko" (ギビニバンコ).
Ilmari returned to Finland in 2002 along with his group members and favourite camp counsellor, Andrew Busam, where they shot photos and footage for their shortcuts! DVD and their photobook RIP STYLE, and performed live in Helsinki.
Ilmari's beatboxing is featured in several concerts and with Kei in the song "By the Way" on their TOKYO CLASSIC album.
In 2005, GAP held their 10th Anniversary campaign. Ilmari was chosen (as were BoA & Hiro of Exile) as models for displaying their individual style.
Collaborations
Ilmari created the short-lived group Steady&Co in 2001 with BOTS and Kenji Furuya of Dragon Ash and SHIGEO of Skebo King. Their aim was to create a much lighter folk influenced form of hip hop against emerging genres such as J-Urban. In 2004, Ilmari helped launch singer Salyu by collaborating with her to release "Valon" under the name IlmarixSalyu. In 2005, he was made leader of the unit Teriyaki Boyz consisting of fellow Rip Slyme rapper Ryo-Z, Nigo, Wise and Verbal of M-Flo. In 2012 Ilmari formed a rap rock band with KOSEN, YAS and SOHNOSUKE called The Beatmoss.
Personal life
Ilmari was born on June 17, 1975, in Helsinki, Finland to a Finnish mother and a Japanese father. He is best known by his stage name Ilmari (イルマリ), which is considered to be his middle name in Finland.
With his sister Elisa, Ilmari owns a Japanese restaurant called Len's Keishoku Bar in Helsinki.
In early 2010, actress Yuri Ebihara announced a romantic relationship with Ilmari, and the two announced their marriage in May of the same year. Their son was born in 2015, and daughter in 2021.
Discography & profile
Normalised profile
Percentiles are computed over every artist in the database, so a tier-3 artist can still sit in the 95th percentile on a single axis.
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 5 | 32th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 0 | 0th |
| Studio albums | 0 | 0th |
| Awards recorded | 0 | 0th |
| Timeline events | 1 | 40.6th |
| Recording span (years) | — | no data |
| Genres | 1 | 56th |
Percentiles are computed at render time; missing values mean the artist has no data on that axis.
Discography (0 release groups)
No discography rows stored yet
MusicBrainz enrichment for this artist is still pending. Release groups appear here once it runs.
Stats & PK
Percentile within all 23,672 published artists.Put Keisuke Ogihara head-to-head →
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 5 | 32th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 0 | 0th |
| Studio albums | 0 | 0th |
| Awards recorded | 0 | 0th |
| Timeline events | 1 | 40.6th |
| Recording span (years) | — | no data |
| Genres | 1 | 56th |
Awards & honours
Where this record comes from
portrait—Wikimedia Commons · CC BY-SA 4.0 · retrieved 11 October 2026
https://commons.wikimedia.org/wiki/File:Keisuke-Ogihara-live-aug13-2016.jpgcore—wikidata · CC0 · retrieved 10 October 2026
https://www.wikidata.org/wiki/Q4354182genre—wikidata · CC0 · retrieved 11 October 2026
https://www.wikidata.org/wiki/Q4354182seed-list—wikipedia · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Keisuke_Ogiharabiography—wikipedia-en · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Keisuke_Ogihara
Why this artist is in the database
- List of hip-hop musicians
Tier rule: curated genre/region list
Image: Nesnad · CC BY-SA 4.0 · Wikimedia Commons
Wikidata: Q4354182 · MusicBrainz: 1d56c6f2-2870-4517-83fa-43f715d16091
Similar artists
Browse every Tier 3 artist →Ranked from this record's own data: shared genre tags (rarer tags weigh more), era, home country and comparable fame. Every card lists the signals that placed it — no editorial picks.

Breland
United States · Person
hip-hop
1 shared genre tag
3 wikis

Cham
Jamaica · Person
hip-hop
1 shared genre tag · debut 1997
8 wikis

Dwele
United States · Person
hip-hop
1 shared genre tag · debut 2002
8 wikis

MadeinTYO
United States · Person
hip-hop
1 shared genre tag · debut 2016
8 wikis

Blanco Brown
United States · Person
hip-hop
1 shared genre tag · debut 2019
9 wikis

Dax
Canada · Person
hip-hop
1 shared genre tag · debut 2017
9 wikis

Super Cat
Jamaica · Person
hip-hop
1 shared genre tag · debut 1985
9 wikis

Michael Franti
United States · Person
hip-hop
1 shared genre tag · debut 2002
12 wikis