It seems that Chise is now immortal due to the eye curse that Joseph gave her.
Elias is seen to have lived for a century and shows no signs of deterioration (which seems to show that he cannot die of aging), also through the series we have been given indications that Elias is part human and various Fae elements.
The story had a light novel adaptation. How did this version of the story end?
Could Elias and Chise be together forever since they are both immortal?
Can Elias die from deterioration (aging)?
At the end of the story, Elias and Chise will end up together or will they break up because of something that we still do not know?
What ending do you think the author Yamazaki Kore wants to give to his story?