3 books in series

先生は仏頂面してやってくる [Sensei wa Butchozura Shite Yatte Kuru]

先生は仏頂面してやってくる [Sensei wa Butchozura Shite Yatte Kuru] is a 3-book series with 3 primary works first released in 2017 with contributions by Haiji Kurusu and 来栖ハイジ.