Seraph of the End: Vampire Reign vol. 16

"The battle to save Ferid and Krul Tepes from Ky Luc and the vampires begins in full force, but it's not going to be easy. Ky Luc is a Fifth Progenitor and it'll take a lot of coordination and teamwork to take him down. But Shinoa Squad and Guren have a plan--use the Seraph inside Yuichiro to overwhelm the vampire! But can Yuichiro keep himself in control of it long enough to defeat Ky Luc?!"--Amazon.com