TV-Series
Description
Bruno von Grannzreich is the third prince of the Kingdom of Grannzreich. At sixteen years old, he stands at 180 centimeters tall and has a birthday on March 30. He has short brown hair, blue eyes, and wears square-rimmed glasses, bearing a noted resemblance to his mother.

From a young age, Bruno has been regarded as a prodigy with a sharp mind, earning him the informal title of the high-pressure or high-strung genius prince. His academic excellence, however, is not the result of natural brilliance alone but of relentless and disciplined hard work. This drive stems from his childhood, where he grew up in the shadow of his eldest brother, Eins, who was universally recognized as a genius and the most likely heir to the throne. Determined not to give up his own ambition to be king, Bruno dedicated himself to his studies, believing that hard work could overcome innate talent. Despite receiving praise for his achievements, he was never truly satisfied, as he constantly felt a sense of inferiority and was driven by a powerful need for recognition.

In terms of personality, Bruno is the most serious and studious of the brothers. He is formal, polite, and values order and etiquette, often reminding others of their princely duties. While he can initially come across as arrogant or rigid due to his obsession with details and high standards, he is not as proud as some of his siblings and is willing to admit when he is wrong. His no-nonsense attitude means he can be a nag and a worrywart, but this stems from a sincere investment in the well-being of those around him. He has a tendency to overthink and obsess over things, and he is deeply uncomfortable with frivolous behavior. However, beneath his serious exterior lies a compassionate and remarkably humble individual. He is often insecure about his social life and his lack of natural charisma, worrying that he is nothing special and that his efforts might ultimately be a fraud.

Bruno's central role in the story is as one of the four princes being tutored by Heine Wittgenstein. He initially dismissed the new royal tutor because Heine lacked a university degree, believing there was nothing left for him to learn. However, after privately testing Heine in various subjects such as chess and arithmetic and being decisively defeated, Bruno underwent a complete transformation. He quickly changed his attitude to one of immense respect and admiration, choosing to view their relationship not as prince and commoner, but as master and apprentice. He began calling Heine Master and developed an almost obsessive desire to learn from him and earn his approval, showing a deeply deferential and fanboyish side to his character.

Bruno's key relationships are defined by both rivalry and care. His primary motivation has long been to surpass his eldest brother, Eins, though he also respects Eins and finds him intimidating. He shares a close and protective bond with his older brother, Kai; a year before the story begins, both attended military school where Bruno was bullied. When Kai discovered this, he flew into a violent rage defending Bruno, resulting in Kai's suspension and their forced withdrawal from the academy, an incident for which Bruno felt immense guilt. He frequently clashes with his younger brother, Licht, due to their opposing personalities, but secretly worries about him and cares for his well-being. He also feels some jealousy toward his brother Leonhard, who is able to devise simple solutions that Bruno's rigid thinking cannot. As the story progresses, Bruno's development sees him confronting his deep-seated insecurities and learning to value growth and collaboration over solitary competition for the throne. Eventually, he chooses to leave the palace to travel to another country to study under a professor he admires, a decision that prioritizes his intellectual curiosity and self-defined purpose over the immediate politics of succession.

Bruno possesses a wide range of notable abilities. He excels in all academic subjects, with a particular focus on sociology and philosophy, and has published numerous highly-regarded research papers. Before meeting Heine, he was an unbeatable chess player. He is multilingual, with fluency in at least five languages, and is knowledgeable in music, able to play the violin. He also has some basic combat training, including swordsmanship, from his time at military school.