Sato Takeru & Chidori Nobu yo! Kono Nazo wo Toitemiro! ~Tensai Nazotoki Shuudan kara no Chousenjou~(2021)

Ken Sato and Nobu Chidori's best friends team up for a New Year's special! Tsubasa Honda, Soichi Nakaoka, Jun Shisaka, and the best puzzle-solving creators in Japan challenge the "strongest puzzle ever"!