Just like the original source!!! She looks like a young girl. She still retains her memories of Urano Motosu from before her reincarnation. Relying on those memories, she began making books as Myne, a soldier's daughter in the lower city. However, her vast magical power drew the attention of nobles. To protect her loved ones, she changed her name to Rozemyne and became the adopted daughter of the Archduke. While struggling with the cultural gap between commoners and nobles, she also became the High Bishop of the temple. No matter how much her environment changes, her core personality—going on a rampage whenever she finds a book—remains the same.

Just like the original source!!! The High Priest. He is Rozemyne's protector and educator in the temple, and one of her guardians in noble society. A noble and the half-brother of Archduke Sylvester, he resides in the temple for certain reasons. He is strict with both himself and others, but inwardly he highly values and favors Rozemyne for keeping up with his Spartan education despite her constant complaining. When Rozemyne was a blue shrine maiden apprentice, he shared her memories of her time as Urano by using a magic tool to synchronize their consciousness.

Just like the original source!!! The Archduke of Ehrenfest and Rozemyne's new adoptive father, serving as one of her guardians in noble society. He is Ferdinand's half-brother. He has a free-spirited personality, essentially a grade-school boy at heart, and puts his full effort into whatever he wants to do. While visiting the temple incognito as a blue priest, he became interested in Rozemyne's knowledge and decided to adopt her. At that time, he arrested his uncle, the former High Bishop, and his mother, Veronica, for their crimes and corruption.

Just like the original source!!! The first wife of the Archduke of Ehrenfest. She is Rozemyne's adoptive mother in noble society and has three children with Sylvester, including Wilfried. She appears to be a gentle beauty, but she speaks her mind clearly when necessary. She is two years older than Sylvester and possesses the great ability to keep him in check. She is close friends with Elvira and is building her own faction with her help.

Just like the original source!!! The eldest son of Sylvester and Florencia, and Rozemyne's adoptive older brother. A member of the Archduke's family. Destined from birth to be the next Archduke, he was raised with excessive spoiling by his grandmother, Veronica. As a result, he became quite childish and selfish.

Just like the original source!!! Rozemyne's noble father and one of her guardians in noble society. Originally, he was supposed to adopt Myne, but since Sylvester became her adoptive father, Karstedt became her biological father on paper. He is the Knight Commander of Ehrenfest and serves as Sylvester's guard knight. An upper noble born to the Archduke's family, he is also a cousin to Sylvester and Ferdinand. He comes from a family of muscle-heads and has a buff physique. Despite his appearance, he is a dependable father who laughs easily.

Just like the original source!!! A laynoble. As punishment for failing to protect his charge due to the status gap during a Trombe hunt, he was ordered to guard Rozemyne while she was a blue shrine maiden apprentice. He earned her trust and officially became her guard knight when she was adopted by the Archduke. It is an incredibly rare stroke of luck for a laynoble to become a guard knight for the Archduke's family, leading others to rumor that he is the "man who found a feystone in a trash heap." He is one of the few people who knows Rozemyne is originally a commoner.

Just like the original source!!! A newly assigned guard knight for Rozemyne. A mednoble and the younger sister of Giebe Illgner, a local lord. She was in the same year as Damuel at the Royal Academy. She is a tall, cool-looking woman who embodies the image of a female knight. Her sword skills are top-notch, and her mana capacity is higher than Damuel's, making her a reliable presence in battle. Despite being a noble, she accepts guarding duties at the temple and the lower city without any sign of distaste. She actually has a secret fondness for cute things.

Just like the original source!!! The owner of the Gilberta Company, which deals in clothing and accessories. Single. During Rozemyne's time in the lower city, he was the first to recognize the value of the products she brought in and highly valued her talent. He is a mentor-like figure to her in business. He is a shrewd businessman who will do anything for profit, such as launching plant-based paper sales and restaurant management. However, he is also a hard worker who is constantly dragged around by Rozemyne, who now holds immense power as the Archduke's adopted daughter.

Just like the original source!!! Rozemyne's childhood friend from her days in the lower city. He works as an apprentice merchant at Benno's Gilberta Company. Under the promise that Lutz would make whatever Myne thought of, they have created various things, starting with plant-based paper. In the lower city, he was her caretaker who managed her health, and even now that Rozemyne is a noble, she still relies on him. He knows the secret of Rozemyne's past as Urano and serves as her link to her family in the lower city.