Sacrifice?

"Ow!" Olivia yelped as she looked at Isaac in genuine shock.

Isaac felt her hold on him loosen and he quickly moved away to get distance away from her. He looked at her with narrowed eyes, 'Tsk, why now of all times?'

Curses were unpredictable. One could say they were able to control them, but such a statement could not be further from the truth. That was especially the case for Ria's case.

Her curse carried the divine nature of a Cupid and now, right before his eyes, Isaac witnessed her second form. A woman with jet black wings and slim tail with an arrow on its end. She was the creature of Lust from the depths of Hell, a Succubus.

The nature of Ria's curse was not entirely unknown to Isaac. But knowing its origin was the best he could do for Ria. He did not know the condition of the curse nor did he even know how it appeared. He did not care because her curse barely affected him. Even if the curses' draining effect appeared, Isaac would barely be affected.