Hi, I can't seem to remember the name of this manga:
Genre: Supernatural, Shounen, Action

It was about a teen who lived in a temple and could see youkai, so he wore glasses to not see them because he thought he was powerless. In fact, he was a child genius at dealing with youkai until something happened and they had to seal off his memories of that.

There was also a blond girl classmate who could use a sword, a vampire?, and his teacher who was another branch of exorcist?

Probably around 2012 manga. Hopefully someone can help me find it! Thanks!

Totsugami?

That's it! Thank you!