Keisuke Ogihara

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Background information
Birth name Ogihara Ilmari Keisuke (荻原イルマリ恵介)
Born (1975-06-17) June 17, 1975 (age 42)
Origin Helsinki, Finland
Genres Hip hop
Occupation(s) MC

Keisuke Ilmari Ogihara (荻原イルマリ恵介?, Ogihara Irumari Keisuke) is a Japanese hip hop recording artist and one of the founding members of the hip hop group Rip Slyme. He was born on June 17, 1975 in Helsinki, Finland to a Japanese father and a Finnish mother. He is best known by his stage name Ilmari (イルマリ), which is considered to be his middle name in Finland.


Ilmari attended the same primary and middle school as Ryo-Z. During this, they became the founding members of Rip Slyme. After switching several schools, Ilmari then left for an international school. While there 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 & their photobook RIP STYLE. They held several concerts in Helsinki as well. Andrew provided moral support throughout the trip and was there for anyone who needed a hug.

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. With his sister Elisa, Ilmari owns a Japanese restaurant called Len's Keishoku Bar in Helsinki.[1] Yuri Ebihara recently announced that she's in a relationship with Ilmari,[2] and the two went public with the news of their marriage in May 2010.[3]


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 & Verbal of M-Flo. In 2012 Ilmari formed a rap rock band with KOSEN, YAS, and SOHNOSUKE called The Beatmoss.[4]


With Rip Sylme

With Steady & Co.

With Teriyaki Boyz

With The Beatmoss

  • The Beatmoss Vol. 1 (2012)
  • The Beatmoss Vol. 2 (2013)


  1. ^
  2. ^ "Ebi-chan tickled pink by Rip Slyme's Ilmari". Archived from the original on 2011-06-05. 
  3. ^ "Yahoo! News Japan announcement". Archived from the original on 2010-05-13. 
  4. ^