Have a Femme Fatale. @comic

Nika Satanic Barfesta is a wicked woman. With her unparalleled beauty and the supernatural ability of "charm" that allows her to manipulate anyone who is infatuated with her, she has turned people all over the world into her servants. Nika's next target is Nathaniel Noah, the Demon King of the Demon World and her former nemesis. However, Nathaniel is extremely socially awkward and faints at the slightest excitement. "Demon King... look at me," Nika tries to use every seductive trick she can find to captivate Nathaniel... A love game of doom begins!

(Source: Shogakukan, translated)