A Vulture, a Confrontation, and Ankh's Return

Eiji is strangely furious and threats to use the purple medals to fight Ankh. But Ankh still possesses Shingo's body and escapes. Because of Ankh's lack of Cores, becoming complete will be even harder than before, Approaching Dr. Maki, who is turning into a Greeed, Maki gives him a suggestion. What is it...?