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For the curious here was the staff for the CM last year:
Staff
Director/Storyboards: Taichi Ishidate
Character Design/Animation Director: Chise Kamoi
Key Animators: Chiyoko Ueno, Naoko Yamada, Rie Sezaki, Nao Naitou, Rika Oota, Tatsuya Satou (Animation DO)
In-between Check: Kiyoka Negi
Color Design: Kana Miyata
Special Effects: Shizuka Uno
Backgrounds: Tomoki Hirashi
Director of Photography: Tetsuo Umetsu

Ishidate has been rarely used since Nichijou and Kamoi drew the illustrations for the light novels. This was the project I felt that was most likely prior to last week's Chuunibyou CM.