The Devil Is A Part-Timer! High School N! (Light Novel)

The popular fantasy about a Demon Lord and the brave hero tasked with defeating him becomes a school comedy! In this spin-off to the main series, Sadao is a high school student trying to enjoy his school life to the fullest along with his classmate Chiho, and Shiro, who is working at MgRonald. One day, he is involved in an accident and his true identity is discovered by former hero Emi. Curious about Sadao’s high school life, she dons a school uniform and sneaks into the school!
Notice: This book is written in Japanese.