The performance was held on May 6, and drew a crowd of 10,000 people. On March 12, the ninth single was released, and two more on May 14 and July 30. A national live house tour was held from July 23 to September 2. On September 20, their next single, "Stand〜Koko ni iru yo〜", was released for their collaboration unit with , . On October 19, their first show on terrestrial television, ' debuted on Fuji TV. On October 25, they performed at "Anime Idol Asia" in Bangkok, Thailand, alongside Yumemiru Adolescence and the Kamen Rider Girls. On November 12 their next single "Ai ga aru kara!!" was released under the "Dempagumi.inc×gdgdYōseis" moniker. On November 26 their next single ' was released. On February 10 and 11, 2015, a concert was held at Yoyogi National Gymnasium for two days, with an audience of 20,000. A national tour was held from February 27 to May 6. From July 16 to August 6, they hosted the Battle of the Bands tour "Kagayaki Tour". On September 26 and 27, they held a live performance at the , claiming that it will be the final round of the World Tour (consecutive appearances to overseas Japanese cultural events) in June and July. On June 19 they made their first appearance on "Music Station". Their third album "" was released on February 18. On April 29, for their collaboration unit "Shokotan♥Dempagumi" with Shoko Nakagawa, their single "" was released. On June 13, their 13th single was released. On September 16, their 14th single "" was released, becoming the first one to top the Billboard Japan single charts. In addition, on October 9 and December 18, distribution limited singles were released, and Aizawa worked on the jacket illustrations of both singles. The "Best Japanese Act" voting at the 2015 MTV Europe Music Awards was held on Twitter on September 15. On October 15 the result of the web voting was to be the Japan representative. In 2016, three singles were released once a month from January to March. A tour of 30 performances from 21 prefectures was held from January 9 to April 2. Their fourth album "" was released on April 27. A second Battle of the Bands tour was held from July to September. As a tie in with the anime "The Disastrous Life of Saiki K.", the ending theme was released on August 8, and their 15th single, , was released on November 2.