Dark Gathering, Vol. 15 (manga)

An unwilling magnet for the supernatural and a ghost-hunting little girl join forces to capture Japan’s most terrifying and dangerous spirits. After a dangerous encounter with a malevolent spirit, Keitaro Gentoga wants nothing to do with the supernatural. Unfortunately for this reluctant ghost magnet, he’s stuck helping Yayoi Hozuki—a strange young girl who’s intent on capturing Japan’s most terrifying ghosts and ghouls.

As the battle against Yin Jiao rages on, a deadly new spirit enters the fray—the legendary oni Shuten-Doji. While Yayoi struggles to hold her own against an incarnation of calamity itself, Eiko and Keitaro will have to find some way to survive in a head-to-head confrontation with one of Japan’s most terrifying monsters!