The Teen Exorcist, Vol. 3 (manga)

Thirteen-year-old Masahiro and his trusty companion Mokkun are on the hunt for Kyuuki, a demon lord from China, who is after Akiko! When one of the Twelve Heavenly Generals, Qinglong, approaches Mashiro, he expects help, but it seems that Qinglong has some beef with Guren…