In a world where humans and demons coexist and compete, people who practice magic and kill demons as their own mission are called demon masters. Qi Xiaoxuan, the captain of the national demon master, met the prodigal Huzi by accident, and the two embarked on a journey to slay demons and protect the Tao together. Now, the world has experienced five hundred years of peace, and the demons are already ready to move, casting a haze on their future...

A special episode included as a bonus in the ASOBI STORE special edition Blu-ray box released on March 28, 2025.

Finally, the day of Mai's high school graduation has arrived. While Sakuta eagerly waits for his girlfriend, an elementary schooler who looks exactly like her appears before him. Suspicious, and for all the wrong reasons... Meanwhile, Sakuta and Kaede's father suddenly calls, saying that their mother wants to see her daughter. She was hospitalized because Kaede's condition had been too much for her to bear, so what could she possibly want now?