Ishida Akira—A music producer, is appointed to Fujinomiya City, Shizuoka Prefecture, and the predecessor group TEAM MII (Team M-Two) has been active for a limited time since June 2012. In April 2013, 3776 was formed in the form of taking over TEAM MII. Afterwards, activities are continued through "Season # 0", "Season # 1", "Season # 2", through the exchange of members several times until June 2014. Starting in August 2014, the only solo project "Season # 3" of the remaining member Ide Chiyono started. The first CD 「ラブレター(love letter)」 is released as "Season # 3" on December 28, 2014.
The 1st full album 「3776を聴かない理由があるとすれば（If there is a reason not to listen to 3776）」 released on October 28, 2015. This is a well-made concept album with the theme of "mountain climbing Mt. Fuji". The metamorphosis is used, the avant-garde tune reminiscent of New Wave, and the fancy construction such as "the total playing time becomes 3776 seconds(!)”, it received favorable evaluation from Japanese music critics and musicians.
In September 2016, The 1st solo album 「もうすぐ高校生活（Immediately High School Life）」 released under the name of Ide Chiyono. Also, from 2015, the style "Minanaro Extended" in which Producer Ishida Akira is a guitar player and Ide Chiyono gives improvisation using loop machines (RC-300, RC-505, MX-1 etc.) was announced. 2016 On June 15th, the first CD name under the "Minanaro Extended" 「僕だけのハッピーエンド (My only happy end）」 was released.
From May 2017, a new mode "Link Idol 3776" was announced, and songs with different lyrics and songs (version of Ide Chiyono and version of Hirose Aina—ex. Peach sugar snow) are presented at different stages with the same title. It was an experimental attempt. However, this ended in April 2018.
As of May, 2018, 3776 has restarted again as a solo project by Ide Chiyono.