Liliana S. B. Heilig

Occupation: Barrier Master

Princess of the Heilig Kingdom. A beautiful young girl with blond hair and blue eyes, 14 years old.

Although she is a princess, she is not overly formal and has a bright and friendly personality, making her beloved by the citizens and Hajime's classmates. She is close friends with Kaori and Shizuku. Her nickname is Lily.

She can handle magic such as creating barriers and restraining opponents with ropes of light.

In the middle of the story, she senses the unrest within the royal palace and witnesses the scene where the royal family's change of heart and Aiko being kidnapped, prompting her to leave the capital alone to seek help from the Ankaji Duchy. While hitching a ride with the Yunker Company's caravan, she is attacked by bandits but is rescued by Hajime and his group. However, Hajime has completely forgotten about her, and she is treated indifferently by Hajime and his group, lamenting, "Even though I'm a princess..."

After the invasion of the royal capital, she goes to the Helscher Empire to rebuild the kingdom and engages in an engagement party with Crown Prince Bias in order to obtain assistance, sacrificing herself. However, just before the party, she is almost violated by Bias but is saved by Hajime's "Arachne." At that time, she develops feelings for Hajime, who responded to her call for help, and at the party, she wears a jet-black dress as a gesture of retaliation against the empire and dances with Hajime to thank him for his help. Later, Bias is executed, and the empire's national power declines due to the abolition of slavery, leading to the annulment of the engagement. After Gahard declares an oath in Fairbergen and is sent to the imperial city indifferently through Hajime's gate, she too is sent back to the royal capital indifferently through the gate, along with Helina and the royal guards.

In the final battle, she becomes the supreme commander of the human army, replacing Gahard who takes command at the front lines. By that time, she no longer hides her feelings for Hajime, but due to her position and age, she remains the only one among Hajime's heroines to have a purely proper relationship.