A demon prince and the primary love interest, whose reputation contrasts with his actions that reveal a protective nature and strategic mind. He plays a dual role as both mentor and partner to Emilia, influencing her understanding of Hell's moral complexities.

A demon prince known for indulgence and self-obsession, functioning as an enigmatic antagonist throughout the story. His reputation overshadows his limited actions, serving as a misleading focal point for Emilia's quest.

Wrath's brother, characterized by his manipulative and envious nature, who creates conflict through deception and half-truths. As a foil to Wrath, he exemplifies the treacherous environment Emilia must navigate.

Close allies to Emilia within House Wrath, offering her insight and companionship amidst the political intrigue of Hell. Anir bridges human and demon perspectives, while Fauna provides social context and genuine friendship.

An ancient and powerful oracle figure residing in Wrath’s castle, known for her cryptic guidance and vast knowledge of curses and poisons. She influences Emilia’s journey of self-discovery through enigmatic advice and pivotal support.