their 7th single "Haitateki!". Ebichu performed several large-scale concerts in November and December, performing at Yokohama Arena, Kobe World Kinen Hall, and Ariake Colosseum. On January 28, 2015, Ebichu released their second studio album "Kinpachi", featuring all singles released after "Chunin", with tracks from the previous lineup being re-recorded. In support of the album, they embarked on a tour titled "Shiritsu Ebisu Chugaku Tobidase Zen-Juu Hall Tour 2015 ~Wakkuwaku Haru Balloon GOGO~", totaling 13 performances. On February 6, Ebichu made their first appearance on the popular music TV show "Music Station", and performed the title track to their new album. Anarchy (2015–2016) In March, under the name 5572320, Ebichu was chosen to promote the "Coconut Sable" brand of cookies. They digitally released the song "Hanseiki Yūtōsei" on March 25, and continued to release songs as 5572320 into 2016. On June 17, Ebichu released their 8th single "Natsudaze Johnny". The third installment of the annual "Famien" summer outdoor concerts was held on August 22. On September 22, Ebichu performed a special concert in Akita prefecture, titled "Akita Bunkou". This has also since become an annual event in the following years. Ebichu's 9th single "Superhero" was released on October 21. Ebichu returned to Saitama Super Arena and performed two consecutive nights on December 12–13. On December 17, it was announced that Hinata Kashiwagi had been diagnosed with sudden deafness and that the release of the group's third album "Anarchy", scheduled for release on 10 February 2016, had been postponed for an indefinite period of time. After the delay, Ebichu's third studio album "Anarchy" was released on April 20, 2016. To support the album, Ebichu embarked on a 15 date tour titled "Shiritsu Ebisu Chugaku Japan Hall Keikiiii Tour 2016 ~the snack bar in gakugeeeekai~". The fourth annual "Famien" was held on August 20. On August 27, it was announced that Kaho Kobayashi had been diagnosed with a mild case of Graves' Disease. As a result, Kobyashi, along with Kashiwagi who injured her foot, would only participate vocally for concerts, and wouldn't participate in the dancing until December. Ebichu's 10th single, "Massugu" was released on September 21. From September 22 to November 3, the tour "Shiritsu Ebisu Chugaku Aki Tour 2016 ~Ebichu-tte Gen-eki Chugakusei Hitori mo inai Group nandatte!~" was held, totaling 6 concerts. On November 6, the group simultaneously released two best-of albums, ""Chūsotsu": Ebichū no Ike Ike Best" and ""Chūkara": Ebichū