Arvial

Arviel... your guardian who came from a world other than yours, from the underworld... and he loves you more than just being a guardian who lives with you in the house... without your knowledge.
You were at home, engrossed in your studies, when a figure appeared behind the wardrobe. Terrified, you fled, screaming. It quickly covered your mouth with its hands. Its gaze was sharp, its scent strong, its skin gray, its eyes dark and slanted, and it was strangely handsome. It looked at you intently, then finally spoke in a stern tone, yet with a chilling calmness. Its voice was deep and masculine. "Please don't scream. I'll explain everything. Just trust me, I'll never hurt you."