Realist Exorcist

Saeki Itaru and his family find themselves in a desperate situation after being caught up in a paranormal phenomenon. Their savior is the beautiful exorcist, Shikimi Shigetsu. However, Shigetsu is a pragmatic exorcist who doesn't believe in supernatural beings... Before he knows it, Itaru finds himself working as Shigetsu's assistant, helping him with his exorcism business while constantly trembling at the supernatural occurrences before him!?

(Source: Akita Shoten, translated)