He made his acting debut in the television drama Agri (1997) and rose to popularity after starring in the film Koizora (2007), winning Newcomer of the Year at the 31st Japan Academy Prize.

In the following years, Miura notably starred in the third season of Gokusen (2009), Bloody Monday (2009), Naoko (2009), Kimi ni Todoke (2010), Last Cinderella (2013), Boku no Ita Jikan (2013), The Eternal Zero (2013), Attack on Titan (2015), Gintama 2 (2018), and Two Weeks (2019).

He was posthumously awarded the Nikkan Sports Yujiro Ishihara Film Prize for Fan's Choice in Best Actor for his role in Godai: The Wunderkind.

[5] Following the closure of Actors Studio, the three signed to Amuse Inc. As Brash Brats went on indefinite hiatus in 2005, Miura continued his acting career.

Early notable television projects that he appeared in include Ima, Ai ni Ikimasu, Unfair, Children, 14-sai no Haha, and Fight.

[12] In 2008, he was cast as Ryo Shiraishi in Binbō Danshi,[13] Ren Kazama in the third season of Gokusen,[14] and Fujimaru Takagi in the live-action television drama adaptation of Bloody Monday,[15] as well as a guest appearance in a special episode of Galileo as a younger version of the main character, Manabu Yukawa.

[35] In the same month, Miura released an idol DVD with Takeru Satoh chronicling their trip to New York City, which was titled HT: NY no Chūshin, Nabe no Tsutsuku.

[38] Later that year, he was cast in his first getsuku drama, Taisetsu na Koto wa Subete Kimi ga Oshiete Kureta, as Shūji Kashiwagi, which was broadcast in January 2011.

[39] In May 2011, Miura played Kensuke Sanada in the episode "Janken" of television mini-series Yo ni mo Kimyō na Monogatari in during the 2011 spring serialization.

[43] On November 11, 2011, Miura and Satoh released a second part of their video diary, titled HT: Sekidō no Mashita de, Nabe no Tsutsuku, which was filmed in Malaysia.

[47] From 2012 to 2013, he co-starred in the stage play Zipang Punk: Goemon Rock III as a guest performer, portraying Akechi Shinkuro.

[6] In 2014, Miura starred in the television drama Boku no Ita Jikan as Takuto Sawada and Satsujin Hensanchi 70 as Keisuke Miyahara.

[69] In September 2017, he co-starred in the television drama Otona Koukou and also appeared in the music video for "Reportage" by Yu Takahashi, the theme song of the series.

[73] He was cast as Sato in the live-action film adaptation of the novel Eine Klein Nachtmusik, which was released in 2019 and also screened internationally under the title Little Nights, Little Love.

[73] On television, Miura became a co-host for the travel program Sekai wa Hoshii Mono ni Afureteru: Tabi Suru Buyer Gokujō List with Juju.

[86] In March 2020, he was cast as Hiroyuki Ishimura in the television drama Gift of Fire, which was set to broadcast in August 2020,[87] and reprised his role for the series' film continuation.

[91] He also stated that he composed and wrote the lyrics for "You & I", one of the B-side tracks,[91][92] and "Night Diver" was later set to debut on Music Station on July 24, 2020.

[92] He co-starred in the television drama Love Will Begin When Money End, which will be broadcast in September 2020,[94] and was also cast in the musical The Illusionist, which was set to run in December 2020.

[106] On July 18, 2020, at 1:35 pm (JST),[107] Miura died by suicide, he was found unresponsive after hanging himself in his closet at his home in Minato, Tokyo.

[2][18][108] His body was discovered by his manager, who had been ready to pick him up for work and then checked up on him after he did not respond to the messages, phone calls, or doorbell sounds.

[117] After the official website for Sekai wa Hoshii Mono ni Afureteru: Tabi Suru Buyer Gokujō List, the travel program Miura had co-hosted since its first broadcast in 2018, posted a statement offering condolences to Miura, this led many users on Twitter to tweet messages addressed to him using the hashtag "SekaiWaHoshiiMonoNiAfureteru" (#世界はほしいモノにあふれてる).