a manga series that involved a kid who was considered a freak by his classmates because he would perform these strange rituals in the courtyard. Later it was revealed that the kid was an Excorcist or something because he fought some supernatural creature using weapons he had disguised as school supplies. Can someone tell me what this manga is called?

the main character had spiked hair and the setting was like middle school years.

Thanks in advance

Be kind or get banned