Insanely handsome. The Magician of the Black Tower. After saving Athy—who nearly died because her body couldn't handle her vast mana—out of pure curiosity, he took the spot of Athy's childhood friend and began staying at the palace. Later, for reasons unknown, he took the magician's exam and passed, earning the nickname of the youngest genius magician. Even though he started things out of curiosity, he eventually becomes a grateful presence to Athy by constantly helping her. He has black hair and red eyes. As a magician, he can control his hair length at will, switching between long and short styles. Athy describes him as the definition of 'pretty-handsome'; he is cute in his young form and handsome in his adult form, suggesting he was born with top-tier looks. He is secretly in love with Athy. When he is with her, he always makes himself look the same age as her. He is Ijekiel's rival. Under Claude's orders to protect Athy, he shares a room with her in the palace.

A beautiful boy with a sunshine-like appearance, featuring silvery-white hair, drooping eyes that give a gentle impression, and golden eyes. He is the young Duke of Alpheus. He is humble, mature, and lacks greed, possessing manners that show consideration for others. Of course, influenced by his status as the Duke's only son and his father's values and personality, he also has high self-esteem and a hidden stubborn streak. In short, he has it all: high status, an outstanding background, wealth, stunning looks, sound values, and a flexible, polite personality that suits any time or place. In the story, he first appears when he encounters Athy, who fell into the Alpheus estate due to Lucas's prank. It is described that he fell in love with her at first sight and visited the place where they met for years, except for the time he spent studying abroad in Arlanta. Later, he meets Athy by chance while she is on a market date with Lucas, but he loses her shortly after and sends her a bluebird she was looking at as a gift. When Athy is driven out due to Claude's memory loss, he follows her at a party and picks up her shoe to put it back on her. When Duke Alpheus asks what he will do if he incurs Claude's wrath, he stands his ground against his father, saying he doesn't have the courage to look at Athy's sad face. He is secretly in love with Athanasia. A pure-hearted man. Lucas's rival.

Athy's personal knight. There seems to be something going on between him and Lilian. The Knight of Blood.

A maid who cherishes Athy. There seems to be something going on between her and Felix.

Athy's father. The Emperor. Handsome. He is cold and sharp, but he is secretly kind to Athy.

She has a crush on Ijekiel. She feels a bit chilling/suspicious. She lives at the Alpheus estate.