Ayakashi Triangle

Kazamaki Matsuri is an exorcist ninja who exorcizes evil spirits called ayakashi. His childhood friend, Kanade Suzu, tends to attract ayakashi, so he secretly protects her from them. But now Suzu has caught the eye of Shirogane, an ayakashi who looks like a cat but rules over all ayakashi as their king!

(Source: Crunchyroll)