Ao no Exorcist, Mob Psycho 100 Recommendations
They both have brothers, the older brother is seemingly gifted with some kind of power. They both exorcise some spirits.
They both have the similar brotherhood theme.
-Rin & Shigeo/Mob have the massive power inside their body (Rin has satanic power/Shigeo has psychic power). They have to learn to control their power. They always there to protect their younger brother.
-Yukio & Ritsu didn't have that power but they can do many things better than their older brother. Despite that, they always have the strange feelings towards their older brother because they think they were 'nothing' compared to them..
Both are about supernatural things, both have great action scenes and cool animation.