Personal Info
Name (Kanji) 小浜良太
Name (Romaji) Ryota Kohama
Born September 4, 1989
Birth place Osaka, Japan
Bold type B
Occupations Musician
Years active 2000 - present
Labels A-Skech
Associated acts HEADS
Friends Toru

Kohama Ryota (小浜良太) is the bassist of the Japanese rock band ONE OK ROCK. He was in the hip-hop group HEADS along with Toru before they disbanded in 2002.


HEADS and before joining ONE OK ROCKEdit

Ryota was born on September 4, 1989 in Osaka. He was once, part of HEADS along with Toru. They met together with two other members: Kohei and Takuya. They formed a hip-hop dance group HEADS when they were fifth and sixth-graders. They were also active before their debut and participated in dance competitions around the years of 1995–1999. They debuted with a single entitled "screeeem!" in July 2000 and followed by the second single "Gooood or Bad!" in November, produced by a popular musician under the label Amuse, Inc.. The dance group made a performance every weekends on busy streets in Osaka's Kyoubashi and Tokyo's Akihabara, shopping, and amusement districts.[1]

HEADS disbanded in 2002 and in 2003 they took a break to improve their abilities. At this point, HEADS as a four member group ended. They merged into a new group with seven other members and were called GROUND 0. In 2004, Toru and Ryota continued their activities as GROUND 0. In 2005 when Toru tried to explore his acting and took a main role in TV series Shibuya Fifteen, Ryota also played in this drama as a minor character and became one of the minor characters in the J-drama Hana Yori Dango.

2005-2008: Joining ONE OK ROCK and Debut AlbumEdit

In 2005, , he was invited by Toru to formed a rock band, alongside their upperclassman Alex and Toru's friend Tomo. In the beginning, Ryota had no interest to join a band or play bass, until he listened to Red Hot Chili Peppers and was inspired to play bass by Flea. During early days of ONE OK ROCK, Ryota only talked to Toru because he felt inferior and didn't talk to Taka for about a year because he was afraid of him. He is hardworking but shy. After signing with a label, Amuse, Inc. Tomo left the band because his parents didn't want their son to pursue that line of work. Tomoya had been teaching at ESP (Musical Academy) and was already in a band that wasn't going well. He then joined ONE OK ROCK in 2006, but only became an official member when they debuted in 2007.[2][3]

In 2007, they released their debut single "Naihi Shinsho" was followed by their other singles "Yume Yume (single)" and "Et Cetera". They released their debut album "Zeitakubyou" and had their first tour, the Tokyo-Osaka-Nagoya Quattro Tour. They released their album "Beam of Light" and followed by "Kanjou Effect". At this point, Ryota and the band had gained more experience and were able to do some more serious recording.

2009-2012: The Alex incident and the New FormationEdit

In April 2009, Ryota was the most furious when Alex was caught groping a schoolgirl on a subway, thinking that it was the end of the band when their activities suddenly came to a stop. He almost quit playing bass to learn to play guitar. In May 2009, it was announced that ONE OK ROCK would continue on without Alex.

In 2010, with the new four-member formation, the band released the single "Kanzen Kankaku Dreamer" and followed by their fourth studio album titled "Niche Syndrome". During the production of the album, he purchased the 5 string bass with heavy music. The band had their tour This is my own judgement! in five Zepp music halls across the nation in 6 days, starting Sendai, Osaka, Nagoya, Fukuoka and ending in a 2-day concert in Tokyo. The second part the tour took place at sixteen different venues until 11 December 2010. They held a final performance in Nippon Budokan, Tokyo on 28 November, followed by the release of a concert DVD "This is My Budokan?!" on 16 February 2011.[4] On August 6, 7 and 8, ONE OK ROCK headlined Rock in Japan Festival and Summer Sonic Festival, followed by Rising Sun Rock Festival, Monster Bash, Treasure05X, Mad Ollie, Countdown Japan 2010/2011, and Radio Crazy.[5]

Since 2010, Ryota usually takes off his shirt when performing, mostly inspired by Flea. He has a lot of tattoos on his body and arms. During English interviews with ONE OK ROCK, Taka accompanied Ryota to improve his English, since Taka is the best English speaker in the band.

In 2011, the band released their single "Answer is Near" and had the "Answer is Alive 2011" tour took place in six Zepp music halls and three other venues from April to June 2011. The band released their first double A-side single "Re:make/No Scared" on July 20, 2011. The band's fifth album, "Zankyo Reference", was released on October 5, 2011. ONE OK ROCK announced fourteen dates between November and December 2011 for the Zankyo Reference Tour.

In 2011, ONE OK ROCK headlined many music festivals, including Jisan Valley Rock Festival in South Korea. In July the band headlined SETSTOCK 2011 and Jisan Valley Rock Festival, followed by Rock in Japan Festival, Rising Sun Rock Festival, Summer Sonic Festival, Monster Bash, Sky Jamboree, and Space Shower's Sweet Love Shower. At the end of the year, they headlined Radio Crazy and Countdown Japan once more.[6]

The band declared their first overseas tour in Start Walking The World on May and June 2012, covering Japan, South Korea, Taiwan, and Singapore.[7] 9mm Parabellum Bullet, Mao Abe, Hello Sleepwalkers, and Crossfaith were the guest performers of their four concert dates in Japan. They headlined Rock in Japan Festival on the main stage, as well as Summer Sonic 2012, alongside Green Day, Franz Ferdinand and Rihanna.[8] They also headlined Oga Namahage Rock Festival, Rising Sun Rock Festival, and Sweet Love Shower.11

2013-2014: World TourEdit

In 2012, they released the single "The Beginning". In 2013, The "Deeper Deeper / Nothing Helps" and followed by their sixth full-length "Jinsei×Boku=" album. Ryota joined with Tomoya and wrote the songs "Sekenshirazu no Uchuhikoshi" and "Deeper Deeper".[9]

In October 2013, the band went on their first tour outside Asia and visited Europe for five concerts. Four out of the five concerts in Europe were sold out almost immediately.[10] In February 2014 they visited the US to hold two concerts in New York and Los Angeles and added two more dates in Philadelphia and Toronto in May. They also performed at Rock on the Range in Columbus, Ohio, their first festival outside Asia. In June and July 2014 they joined VANS WARPED TOUR 2014 and performed in eighteen cities in North America. On May 16, the documentary film about their last Europe and Asia Tour, "FOOL COOL ROCK" debuted and played for a limited time of four weeks at select theaters. The documentary FOOL COOL ROCK will be released on DVD and Blu-ray in November 2014.[11][12]

In September 2014, Ryota confirmed he was dating Haruka Kinami, a Japanese actress.[13] Kinami has been seen attending numerous ONE OK ROCK events recently. She also can be seen in a photo posted on Ryota's Instagram account.

The band released the single "Mighty Long Fall / Decision" with the help of their producer John Feldmann. The song "Decision" is the theme song for their documentary film "FOOL COOL ROCK". In September 2014, ONE OK ROCK held a 2 day stadium concert in Yokohama Stadium in front of 60,000 people called "Mighty Long Fall Live at Yokohama Stadium 2014". This was their first time performing in a stadium.

Ryota among with the band announced USA, South America and Europe Tour in late 2014. They performed at Knotfest, in both Japan and United States, with an additional two dates for the United States, last October 2014.[14][15] They will hit Chile, Argentina, Brazil, Peru and Mexico for South America in November and France, Italy, Switzerland, Germany, Denmark, Sweden, Netherlands, Belgium, United Kingdom and Russia for Europe in December. They performed alongside Ghost Town in the US and UK, and with Tonight Alive and Mallory Knox for most dates in Europe.[16][17] On November 27, they acted as guest performer in Hoobastank's Japan tour.[18]

2015: 35xxxv, World Tour and U.S. DebutEdit

They released the album "35xxxv" on February 11, 2015. The fans described this album, including the Cry Out music video as "too Americanized", yet it managed to get the first place on the Oricon Album weekly ranking being the first time the band achieved the first place. They held the ONE OK ROCK "35xxxv" JAPAN TOUR. The tour started on May 9, 2015 in Shizuoka Ecopa Arena with their support guests.

In May 25, 2015, Taka along with Ryota and the rest announced that they will add two more shows on the tour that will held on September 12-13, 2015 in Chiba Marine Stadium, Makuhari Messe.[19] In May 27, 2015, It was announced that ONE OK ROCK will perform, along with the other bands, in the fourth annual Monster Energy Aftershock Festival on October 25, 2015.[20] In July 2015, Ryota along with the band confirmed that they signed with Warner Bros. Records and planned to re-release 35xxxv as a deluxe edition containing all English tracks on September 25, 2015.[21] Ryota along with the band is set to have a North American tour in fall 2015 with a few selected cities as headlining artists, but will spend the majority of their time as the opening act for All Time Low and Sleeping with Sirens.[22] ONE OK ROCK will also have world tour in Europe and Asia to promote their album.[23]

ONE OK ROCK held a project called ONE OK ROCK, Yahoo! MV appeared in 24 cities around the world in the search (ONE OK ROCK、Yahoo!検索で世界24都市のMVが登場). In September 10, 2015 morning at 1:00 "Yahoo! Search" special project of ONE OK ROCK started. When you search "ONE OK ROCK" in "Yahoo! Search," you will find 24 types that change by time the release of "One o'clock" special movie. Twenty-four cities that appeared in the MV are Japan, Nepal, Moscow, Iceland, Brazil, Colorado, Gambier, Antarctica, Shanghai, India, Paris, Cape Verde, New York, Vancouver, Hawaii, New Caledonia, Bangkok, Iran, London, Greenland, Mexico, Alaska, Niue, and Sydney. It will display "1:00" and the city and carries the message "One O ' clock (ONE OK ROCK)" on the border.[24] Two days after this project, the band released a Music Video for the 35xxxv Deluxe version of Cry Out. The song was in all English lyrics.

ONE OK ROCK started their "35xxxv" North American Tour on September 29, 2015 and ended on October 06. This tour was immediately followed by BACK TO THE FUTURE HEARTS TOUR. ONE OK ROCK became a support act in this tour along with Sleeping with Sirens and All Time Low.[25] Toru went to many places and learned new music ideas from the other bands. On the week of October 17, 2015, 35xxxv (Deluxe Edition) debuted at #20 on Billboard's Heatseekers Albums and its highest peak position is at #17.[26] This chart is for new and upcoming musicians, which is usually a stepping stone towards Billboard 200 or Billboard Hot 100.

On December 02, 2015. ONE OK ROCK 2015 "35xxxv" Europe Tour started with We Came As Romans as a special guest.

Ryota along with band returned to Japan next year for their ONE THOUSAND MILES TOUR 2016 concert along with All Time Low and PVRIS.[27]

2016-present: New single, New album and more gigsEdit

ONE OK ROCK started their "35xxxv" Asia Tour on January 14, 2016 at Asia-World Expo and ended on January 22, 2016 at Fort Canning Park. They returned to Japan after the tour to perform on ONE THOUSAND MILES TOUR 2016. On February 2016, they announced that they will have another tour in North America and Europe. ONE OK ROCK went to United States and started working with with Colin Brittain, Kane Churko, Dark Waves and Bruno Agra to make new songs.

On March 11, 2016. ONE OK ROCK released a new digital single called "Always coming back". The song was first heard in NTT Docomo's television commercial for iPhone 6s.

ONE OK ROCK started they're tour in The Regency Ballroom, San Francisco, California. A day after that, the band performed in Self Help Fest 2016 at San Bernardo, California. After that day, Monster Energy Outbreak Tour continued and ended at House of Blues, Chicago, Illinois on April 18, 2016. ONE OK ROCK went back to their studio in Los Angeles California to continue working on their new album. In May 2016, they went back to Japan and performed in METROPOLITAN ROCK FESTIVAL 2016. In May 31 to June 08, 2016, they toured in Europe and participated in Rock am Ring and Rock im Park.[28][29]

In June 10, Ryota and the band went to Landgraaf, Netherlands to perform at Pinkpop Festival.[30] On June 11, they went to France to perform at the first Download Festival at Longchamp Racecourse in Paris.[31] The next day, they went to the United Kingdom to perform at another Download Festival in Donington Park, England.[32]

In June 30 to July 31, the band joined 5 Seconds of Summer on the first North American leg of their Sounds Live Feels Live World Tour along with the band Hey Violet.

Marking the 10th anniversary of My Chemical Romance's album The Black Parade, Rock Sound announces that there will be a special cover of the said album inviting some of the world's biggest bands, including ONE OK ROCK. The band covers the opening song on the album "The End".[33]

On September 10 and 11, the band held a special live concert at Nagisaen, Shizuoka, Japan where 110,000 spectators experienced a thrilling concert. ONE OK ROCK also announces that they're going to release a digital single called "Taking Off" on September 16, 2016 under Fueled by Ramen. The song was used as a theme song for the Japanese movie "Museum" starring Shun Oguri. The movie will be aired on November 12, 2016. Later at the special live concert, Taka announces that their 8th studio album will be released early next year following an album tour.[34][35][36][37]

On October 8, Sum 41 will have a Japanese edition of their album, 13 Voices, that will include the song "War" featuring Taka.[38]

After signing with Fueled by Ramen[39] on September 11, 2016, they released the lead single "Taking Off" from their eighth album, Ambitions, to be released on January 11, 2017. On November 18, 2016 they released "Bedroom Warfare" the second single from the album. The third single "I was King" was released on December 15, 2016. Ambitions will have collaborations from Avril Lavigne, Alex Gaskarth and the Australian band 5 Seconds of Summer.[40][41]

On November 19, ONE OK ROCK went to South Korea to held their ONE OK ROCK 2016 Live in Korea at KBS Arena. On November 22, the band then went to Shanghai, China to held their ONE OK ROCK 2016 Live in Shanghai at Mercedes Benz Arena. On December 22, ONE OK ROCK went to Fukuoka, Japan. Taka and Toru promoted their upcoming album "Ambition" at the Cross fm[42] while Tomoya and Ryota went to Kudanz's concert that was also held in Fukuoka.[43] After that day, the band participated at AIRJAM 2016 that was also held in Fukuoka.


  • He normally calls Taka as「森ちゃん」Mori-chan and Tomoya as 「智くん」(Mr.T).
  • He was friends with Toru before the band.
  • He prefers to use items by Hurley.
  • Since "Zankyo Reference", Ryota often shown topless in the stage.
  • Until now, Ryota admit that he still learning how to play bass with better experience.
  • He respects the band, Red Hot Chili Peppers.
  • His favorite anime is Dragon Ball Z.

External linkEdit


  1. Hip-Hop Kids Aim High, with "HEADS" Up
  2. Interview with ONE OK ROCK in Tokyo. JaME World
  3. Rockin'On Japan Magazine, June 2012 Edition: Interview with ONE OK ROCK
  5. ONE OK ROCK Past Live Archives
  6. ONE OK ROCK Past Live Archives
  8. Live Report: ONE OK ROCK, Summer Sonic 2011. Gekirock
  9. 100 Facts About Ryota Kohama (小浜 良太)
  13. ONE OK ROCK's Ryota Kohama In Relationship With Actress Haruka Kinami
  14. ONE OK ROCK to perform at KNOTFEST JAPAN 2014
  15. Daily Lineups Revealed For Slipknot’s US ‘Knotfest’
  16. ONE OK ROCK to Tour South America and Europe
  17. ONE OK ROCK - South American & European Tour Announced
  18. MAN WITH A MISSION & ONE OK ROCK to guest in Hoobastank's Japan concerts. Tokyo Hive
  20. Aftershock 2015: Line up. Aftershock Concert
  21. ONE OK ROCK’s North America debut. “35xxxv Deluxe Edition” all in English + North American tour confirmed. Barks
  23. ONE OK ROCK News: ONE OK ROCK 2015 "35xxxv" EUROPE TOUR
  24. ONE OK ROCK、Yahoo!検索で世界24都市のMVが登場. Barks Japan Music Networks, News
  25. [1]
  26. [2]
  28. Lineup 2016 - Rock am Ring 2016
  29. Lineup 2016 - Rock im Park 2016
  31. [3]
  32. Download Festival 2016 Line-up
  34. 【完全レポ】ONE OK ROCK、11万人動員の渚園、圧巻のフィナーレまですべてを観た!
  35. ONE OK ROCK、新曲“Taking Off”を全世界同時リリース!小栗旬主演映画の主題歌に決定
  37. ONE OK ROCK新曲は小栗旬主演、大友啓史監督「ミュージアム」主題歌
  39. ONE OK ROCK sign to Fueled By Ramen, announce English language album - News - Alternative Press. Alternative Press
  40. ONE OK ROCK announce new album 'Ambitions,' release new song—listen - News - Alternative Press. Alternative Press
  41. ONE OK ROCK is back with new "Ambitions". ARAMA! JAPAN
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