Teacher Abe Haruaki is a shy and overly sensitive newcomer. Although he is thrilled to have attained his goal of becoming a teacher, his joy is short-lived! Hyakki Academy, the institution to which he has been assigned, is exclusively run by and for monsters! Why had the principal of the school hired Haruaki, a timid, weak-willed human being? Thus, it is a comedy that shows the odd and colorful everyday lives of Haruaki, the eccentric human teacher, and his varied group of youkai instructors and students—each with their own unique personalities!