Nito no Joreishi

Exorcists Gotsuji and Uruka spend their days exorcising evil spirits on request, inching ever closer to their goal: to cut down a specific spirit as a means of mourning the woman it killed. Uruka, mystified by Gotsuji's actions, accompanies him in his quest for revenge, but where will their journey lead...? Bunny outfits or traditional garb—doesn't matter! Just cut those spirits down! The curtain rises on a new and exciting story full of action and the occult!

(Source: Manga Plus)