Helvi

Helvi is ultimate being (she is literally the Devil) as she says about herself. She was summoned by Theo Asper and stayed with him because of his wish. When he summons the devil Helvi he completely forgets his original goal (to gain power) and asks to be married to her instead. Helvi doesn't believe him at first, but sees in his heart that he is completely smitten with her (as him she isn't gonna share Theo to anyone). Helvi states that most of the times she has been summoned the wisher would then flee after getting their wish, trying to avoid paying the price. She didn't let any of the...