After he joined, he was given the stage name TAKAHIRO and the group went on to release 3 singles and an album to allow fans, new and old, to adapt to the "new" Exile.

[citation needed] On 26 June 2013, he made a solo debut with the single "Issen Ichibyou" (一千一秒; One Thousand and One Second).

[5] In January 2014, he made his acting debut in the Nippon TV drama Senryoku-gai Sōsa-kan (戦力外捜査官; External Force Investigator).

[7] Additionally, Takahiro held his first solo exhibition Hajime - Enogu Baka Nisshi - (始－絵具バカ日誌－; Beginning Painter's Diary) at Saitama Super Arena TOIRO in June of the same year.

[8] On 20 February 2015, it was announced that Takahiro's first drama from 2014 would have a sequel titled Senryoku-gai Sōsa-kan Hime Deka Kurage Senba (戦力外捜査官　姫デカ・海月千波).

[10][11] It was also announced that one of its tracks, "Itsuka mata Aetara", was chosen as the TV commercial theme song for the first season of American series Gotham.

[14][15] On 28 March 2017, it was announced that Takahiro would make his stage acting debut in the Japanese premiere of the British play MOJO and that he had been selected for the main role.

[21] Dream Ami participated in the music video as well as the chorus of the track "BLACK BEANZ" and "Irish Blue" was written for Takahiro by Glay's Takuro.