Nito No Joreishi summary:

Gotsuji and Uruka, two exorcists, spend their days hunting down and banishing "evil spirits." Their mission is to track down and slay a specific malevolent spirit. At the heart of this quest lies Gotsuji's deep, unresolved grief and vengeance for a woman who died long ago. While Gotsuji is consumed by a thirst for revenge, Uruka, who struggles to understand this obsession, faithfully stays by his side. Together, these two exorcists are bound on a journey, but where will it lead?