Kanojo ni Nekomimi wa Tsukimono desu!

Kaede Toufukuji, an otaku high school boy who loves cat ears and can exorcise spirits with his spiritual abilities, spends his days chatting about anime and manga with Kuroto Shichijou, his senpai in the gaming club. One day, when he goes to the club room, he encounters a beautiful girl with cat ears! She asks him to exorcise the cat spirit that is possessing her and causing her trouble, but he can't do it because her cat ears are too cute!

(Source: Bunkasha, translated)