Yōkai Gakkō no Sensei Hajimemashita! #21

Yōkai Gakkō no Sensei Hajimemashita!, or A Terrified Teacher at Ghoul School!, is a manga series by Mai Tanaka that began serialization in 2014. The series follows the comedic and often chaotic life of Haruaki Abe, a timid teacher who is assigned to a school filled with yōkai, or Japanese folkloric spirits. Volume 21 represents a significant milestone in the long-running series, continuing the established blend of character-driven humor and supernatural fantasy that has defined the franchise for over a decade.

The character designs and narrative structure reflect the author's focus on subverting traditional horror tropes by placing them within a lighthearted, slice-of-life framework. Published under the G Fantasy label, the series has maintained a steady following through its creative creature designs and the developing emotional stakes between the protagonist and his students. As part of the later volumes, issue 21 highlights the refinement of Tanaka's artistic style and the maturity of the overarching plot as the school's mysteries continue to unfold.