Ma Curriculum!

Aku Maya is a demon sent to the human world to gain practical experience. She lives in a boarding house and attends school disguised as a human girl, keeping her true identity hidden from her close friends Sui, Sawa, and Arata. Her mission is to use a device called an "evil checker" to collect negative energy from those around her, but she finds little joy in the task. At the same time, she is worried about how her friends would react if they discovered her demonic nature.