World's End Harem: Fantasia Vol. 9 (manga)

War has broken out between Arc and his grandfather, and things are not going well for Nargala. Despite Arc’s best attempts to form alliances with Boa and Miu, they joined Arges’s side and severely decimated Nargala’s troops, forcing Arc to retreat back home. All seems hopeless until Celine approaches Arc, ready to take his blood and receive the power of macht! Meanwhile, Lati has been strangely absent since Aurelia’s death. What does the Dark Elf have planned for Arc?