Miura made debuted in the NHK drama Agri when he was seven. He was enrolled at Tsukuba Actor's Studio and whilst he was still acting, formed Brash Brats with two other students. When Tsukuba Actor's Studio closed down, Miura and his bandmates joined Amuse agency.
Miura soon gained recognition following several dramas such as Fight. During this time, Brash Brats went on hiatus, while Miura continued his acting career.
He was cast in the movie Koizora, which was based on a popular cell phone novel. It was released in the fall of 2007. The same year, he was cast in the movie Negative Happy Chainsaw Edge starring Hayato Ichihara. In 2008, he starred opposite Juri Ueno in Naoko and won the Sponichi Grand Prix Newcomer Award in the 63rd Mainichi Film Awards in 2009 for his role. He also was given a newcomer award in the 31st Japan Academy Awards on February 15, 2008.
Miura then went to star in dramas such as Binbō Danshi and the third season of Gokusen as major supporting characters. His continuingly growing popularity during 2008 then led to him to become the leading character of Fujimaru Takagi in manga based drama Bloody Monday, in which he played a genius computer hacker trying to prevent the release of a biological virus from a terrorist organization. The autumn drama also co-starred fellow Amuse actor Takeru Sato.
In February 2009, he was one of the recipients of a newcomer award in the 2009 Elan d'or Awards. Miura starred in Crows Zero II, which is the sequel to Crows Zero and was reunited with actor Shun Oguri whom he had previously worked with in Binbō Danshi. It opened in theaters on April 11, 2009. A movie of Gokusen was released in July, in which Miura reprised his role of Ren Kazama. From June 20, 2009 to July 26, 2009, Miura starred in his first stage production entitled Hoshi no Daichi ni Furu Namida. On September 2, 2009, it was announced that Miura would play the lead role in the NTV drama Samurai High School.
Miura played a leading role in Shinji Aoyama's 2011 film Tokyo Park.
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