It's been forever since I read/watched YYH so I don't even remember that. But yeah! I can't remember if being able to feel people's auras/spiritual energy is a thing he can do but her's can def be felt (especially when her emotions run high/under the effects of Sanguis).

It's def one of the top Webtoons. It's a modern take on the Persephone and Hades myth along with the rest of the pantheon.