THE IDOLM@STER SHINY COLORS 283 Production Producer Kanshasai ~1.5 Anniversary Festival!!~ (アイドルマスター シャイニーカラーズ 283プロダクション プロデューサー感謝祭 ～1.5 Anniversary Festival!!～) was a one day special concert event that took place on October 27, 2019 in Mori no Hall 21, which was streamed live on Enza's website, Niconico, Youtube, and Periscope. The concert featured voice actresses of Illumination STARS, L'Antica, Houkago Climax Girls, ALSTROEMERIA, and Straylight.
Hitomi Sekine
Mano Sakuragi
Reina Kondo
Hiori Kazano
Mayu Mineda
Meguru Hachimiya
Karin Isobe
Kogane Tsukioka
Chisa Suganuma
Mamimi Tanaka
Anna Yamaki
Sakuya Shirase
Runa Narumi
Yuika Mitsumine
Hiyori Kouno
Kaho Komiya
Haruka Shiraishi
Chiyoko Sonoda
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