Leo (Real Name: Lelia Auraria) Gender: Female (Disguised as a boy) Actual Age: Approx. 7 years old Assumed Age: 10 years old Status: Daughter of the deceased princess of the Auraria Empire. A fake Crown Prince sent to the Sacred Neutral Zone in place of the real Crown Prince. Family: Auraria Imperial Family Personality: Acts like a boy on the outside, but is delicate and affectionate on the inside. She has a very strong desire to sincerely care for and protect her friends, instinctively looking after weaker children. Despite knowing her position is unstable, she cherishes her time with her friends and becomes more sentimental as the time for parting approaches. She is a reincarnated adult who entered the world of a webtoon; because her original spirit is that of an adult, she is very mature, knows the future from the webtoon, and acts grown-up.

Romeo Roseberry Gender: Male Status: Prince Age: Approx. 10 years old Appearance: Blonde hair, blue eyes. He has been exceptionally beautiful and elegant since childhood. Family: Roseberry Imperial Family Personality: Despite his pretty looks, he has a rough and blunt way of speaking. He is so outspoken that he sometimes flusters others. He was the first friend to get close to Leo, having been the one who saved Leo from nearly drowning. While he appears haughty and prickly on the outside, he has a clear sense of concern and responsibility for his friends. Past: His biological mother loved another man, but her parents forced her to marry the Emperor. Although the Emperor waited for her, her power-hungry parents used the man she loved to blackmail her into giving birth to Romeo. Eventually, the man she loved committed suicide, and his mother met the same end as the man she loved. Young Romeo witnessed this scene. Raised with the love of a stepmother and his father, Romeo does not see hallucinations like Oscar, but he carries deep emotional scars.

Oscar Hresvelgr Gender: Male Status: Crown Prince Age: Approx. 10 years old Family: Hresvelgr Imperial Family Appearance: Silver hair, red eyes. He has a small build and looks fragile. Personality: The most delicate and prone to crying among the four. He gets hurt easily and sheds tears often, which strongly triggers Leo's protective instincts. Though he looks weak, he has deep affection for his friends and a dependent side. At this age, Oscar is a child who relies on Leo especially much. Past: His father murdered his mother right in front of Oscar's eyes on a rainy day. His father then told him that his eyes were red because the blood of those around him had entered them. This became a trauma, making him terrified of rainy days. Before meeting Leo, he heard voices and saw hallucinations, and he remains fearful of the rain.

Calix Ascard Gender: Male Age: Approx. 10 years old Status: Prince Appearance: Black hair. Family: Ascard Imperial Dynasty Personality: Despite his royal status, he shows an independent and straightforward nature even at a young age. He is a child with strong pride and a sense of responsibility, to the point that he later abandons his royal authority to become a mercenary. He is the type to show through actions rather than words and is the first to step forward when it comes to protecting his friends. He may seem rough on the outside, but he is deeply loyal and has a playful side. He is quite awkward when talking to girls. Past: His uncle, the Emperor of his country, repeatedly tried to kill him. While he was at the temple, he nearly died from a wolf created by a curse cast by an assassin sent by his uncle in the mountains.

Griffith Nicaea Gender: Male Status: Prince Family: Nicaea Imperial Family Age: Approx. 10 years old Appearance: Brown hair. Personality: Cold and expressionless on the outside, he is a child who rarely reveals his inner thoughts. He already harbors a deep hatred for his family members who try to use him, so he does not open his heart to others easily. He is a man of few words and keeps his distance, but he has a surprisingly warm side toward friends he has acknowledged. He is the type whose outward appearance and inner feelings differ the most.