Other Names

Yokoyama Rina (横山利奈), Hamrig (solo releases post 2018), Ichigo Rinahamu (苺りなはむ)


April 11, 1992 (1992-04-11) (age 28)





Professional Information


Years Active


Associated Acts

BiS, Akishibu Project, Strawberry Syndrome, DOPING BERRY


J-Pop, EDM




Twitter (2)

BiS Information

First Generation


Silly Member (おばか担当)

Date Joined

December 10th, 2010

Date Left

June 24th, 2011

Debut Release

Taiyou no Jumon

Final Release

Brand-new idol Society (2011)

Time in Group

6 months, two weeks

Rinahamu 18
Rina 2017
Rina 2017-0
Rina Kaku

Yokoyama Rina (ヨコヤマリナ, 横山利奈), now known as Ichigo Rinahamu (苺りなはむ) and Hamrig, is a Japanese idol, DJ and producer. She was a founding member of BiS' first generation.

After leaving BiS, she founded her own record label, ICIGO STYLE, and produced numerous groups. She is currently a producer and member of CY8ER, and also releases solo material.

Biography Edit

2010 Edit

Yokoyama Rina was announced as a founding member of BiS at Pour Lui's solo live on December 10th, 2010.

2011 Edit

On January 11th, 2011, Rina's debut song, Taiyou no Jumon, was released.

Yokoyama Rina released her only album as a member of BiS, Brand-new idol Society, on March 23rd.

On June 24th, Yokoyama Rina withdrew from BiS following disagreements with the group's increasingly un-idol like behaviour.

2012 Edit

On October 3rd, Yokoyama Rina formed Akishibu Project, and joined the group as both a member and its producer.

2014 Edit

Yokoyama Rina graduated from Akishibu Project on May 11th, 2014. Following her graduation, she began to perform as a soloist under the stage name "Ichigo Rinahamu".

On July 8th, Rina reunited with BiS at the first-generation's disbandment live, the first time she took part in BiS activities since her 2011 withdrawal.

On September 15th, Ichigo Rinahamu announced that she would retire from being an idol if her self-titled debut EP did not sell 5000 copies by January 15th the following year.

Ichigo Rinahamu was photographed littering on a train on October 15th, prompting a minor scandal and online outrage.

P9-h964h 400x400

Ichigo Rinahamu announced that she would be collaborating with You'll Melt More!'s Younapi as the one-off unit Napi-Hamu on November 4th.

Napi-Hamu's only single, Kiramekiraririkaru, was released December 3rd.

2015 Edit

At 10:30pm on January 15th 2015, just 90 minutes before the deadline, Ichigo Rinahamu reached the 5000 sale target for and her retirement was canceled.

Ichigo Rinahamu's follow-up single, Hamu Tail, was released on May 1st.

On May 31st, Ichigo Rinahamu formed the unit BPM15Q alongside Nicamoq.

On August 16th, Rinahamu released her third solo single, Poisute, Dame, Dame! The single served as an applogy for her October 2014 littering scandal.

Ichigo Rinahamu's debut release with BPM15Q was BPM15Q!, released on Octber 23rd.

2016 Edit

Ichigo Rinahamu

Promoting Ichigo Rinahamu (EP)

Rina Akishibu

As a member of Akishibu Project

On January 11th, Ichigo Rinahamu appeared heavily in the music video for Zettai Wasureruna's “Ice Cream Popup Together”.

On April 23rd, Ichigo Rinahamu launched her own label, ICIGO STYLE, and formed the band Strawberry Syndrome as both member and producer.

A second Rinahamu-produced unit, DOPING BERRY, debuted on July 29th. Unlike Strawberry Syndrome, Rinahamu was not a member and acted as their producer only.

On December 24th, BPM15Q changed their name to CY8ER.

2017 Edit

Ichigo Rinahamu's first release as a member of Strawberry Syndrome, the digital single Sweet Monster, was released on March 24th.

DOPING BERRY disbanded on July 13th. Strawberry Syndrome also became inactive around the same time.
Rina BiS1

As a member of BiS

2018 Edit

In early January, Ichigo Rinahamu started a new solo project, Hamrig, however, kept the name Ichigo Rinahamu for all work outside of these releases.

Ichigo Rinahamu's first digital single as Hamrig, YASHA, was released on January 10th.

On Februay 17th, Hamrig released another digital single, Search And Build Up.

Hamrig's third digital single, Nounai Kanjou Escalation, was released on February 24th.

On March 9th, Rinahamu featured on Yasutaka Nakata's single, White Cube.

Hamrig's fourth digital single, Trap In The Scene, was released on May 2nd.

On May 7th, just five days after the release of Trap In The Scene, Hamrig released another digital single, Sweet Monster.

Hamrig's sixth digital single, Pikopiko, was released on August 7th, exactly 3 months after the release of Sweet Monster.

On September 29th, Hamrig released her seventh digital single, Mirai Teleportation.

On December 14th, Rinahamu recorded a single, Fashion, with frequent collaborator, Yunomi.

2019 Edit

Hamrig's eighth digital single, Plastic Planet, was released on January 7th.

2020 Edit

On April 11th, Ichigo Rinahamu revealed her self-produced fashion brand, Miroku Tokyo, which had designed costumes for CY8ER's promotional material.

Ichigo Rinahamu released her ninth digital single, Hero, on May 4th. This time, it was released under the name "rinahamu" unlike her past digital singles that were credited as "Hamrig".

Profile Edit

  • Name: Yokoyama Rina (横山利奈)
  • Current Stage Name: Ichigo Rinahamu (苺りなはむ)
  • Other Names: Yokoyama Rina (ヨコヤマリナ), Hamrig
  • Birth Date: April 11th, 1992 (age 28)
  • Birthplace: Saitama, Japan
  • Height: 158cm
  • Nickname: Rinahamu (りなはむ)
  • Western Zodiac: Aries
  • Eastern Zodiac: Monkey
  • BiS Role: Silly Member (おばか担当)
  • BiS status:
    • 2010.12.09: Joined BiS
    • 2011.06.24: Left
  • Other Groups:

Discography Edit

See Yokoyama Rina Discography Featured In

Lyrics Written Edit

Solo Edit

CY8ER Edit

Trivia Edit

  • Was the first BiS member to graduate.
  • Considered one of the pioneers of the yume-kawaii subculture.

Gallery Edit

Community content is available under CC-BY-SA unless otherwise noted.