Takahiro Moriuchi (森内 貴寛 Moriuchi Takahiro) (born April 17, 1988 in Tokyo), better known as his stage name Taka, is the lead vocalist of the Japanese rock band One Ok Rock. Prior to this, he was in the boyband NEWS throughout 2003 until he left the group and the agency. 
In 2005, he changed his last name from Moriuchi (森内) to Morita (森田) due to the divorce of his parents. However, in the June 2012 issue of the magazine, ROCKIN'ON JAPAN, he stated in an interview that his real name is Takahiro Moriuchi. In 2013, he is shown again in a photo using his last name, Moriuchi, where all One Ok Rock band members held a written sign of their real names. The photo was taken by photographer, Rui Hashimoto.
2002-2004: Career beginnings and other musical pursuits
2005-present: One Ok Rock
Taka was invited by guitarist/leader, Toru Yamashita, to join the Japanese rock band, One Ok Rock in 2005. The band released their first independent CD in 2006 and were signed by Amuse, Inc., whom they made their major debut with. The band did moderately well with music sales until they hit with major success in August 2012 upon the release of "The Beginning", which was the theme song for the live action movie adaption of the manga and anime, Rurouni Kenshin. The band's concerts have been sold out many times with high attendance and constantly adding new tour dates in Japan. One Ok Rock has also held concert tours overseas in Asia, U.S., Europe and South America.
In March 2013, Simple Plan announced a new version of their song "Summer Paradise" with Taka for a Japanese-only release  They later performed together at the music festival, Punkspring 2013 in Tokyo, Japan.
In summer 2014, One Ok Rock's newest songs, "Mighty Long Fall" and "Heartache" were featured as theme songs for the live action movie sequels, Rurouni Kenshin: Kyoto Inferno and Rurouni Kenshin: The Legend Ends, respectively.
In February 2015, Taka was featured as a guest vocalist on the track "Dreaming Alone" by Against the Current.
His greatest influences are Linkin Park, Good Charlotte, Issues, and Simple Plan. He has also cited Chester Bennington from Linkin Park and Kellin Quinn from Sleeping With Sirens as his inspirations to switch from pop music to rock music.