TV-Series
Description
Karl Neumann is a student attending the Friedrich Emmanuel School of Munich University, where he majors in business management. He is the son of the wealthy former business tycoon Hans Georg Schubart and a woman named Helenka Nováková, who worked as a prostitute. Karl’s early life was marked by hardship and instability. His mother, wanting a better future for him than she could provide, gave him some money and sent him away on a train when he was a young boy. Before he left, she gave him a rabbit's foot that had been a gift from Schubart, which Karl would keep for many years. After being sent away, he spent most of his childhood moving between different foster families before finally finding a stable and loving home with the Neumanns.

Karl is characterized by his kind, gentle, and thoughtful nature. Despite finding affection with his foster parents, he is a deeply sentimental person who had always longed to find his true family and a place to call home. He would often spend time on rooftops at twilight, watching other families in their homes, dreaming of belonging to one. He approaches his complex situation with his biological father not with anger, but with a cautious hope for connection, though he fears being rejected as someone who is only after Schubart's money. His personality is such that he has difficulty comprehending people who intentionally cause harm to others, a trait that shapes his perception of the story's antagonist.

Karl's primary motivation in the story is to connect with his biological father, Hans Georg Schubart, without being perceived as a fortune-seeker. To achieve this, he applies for a job as one of Schubart's weekly Latin readers, becoming the Tuesday Boy. His plan is to get close to his father, earn his respect, and eventually reveal the truth of their relationship. However, Schubart is known as the Vampire of Bavaria, a reclusive and often cruel man who frequently yells at Karl for his supposedly poor Latin pronunciation. Despite this harsh treatment, Karl perseveres. His role in the larger narrative is significant as his quest for paternal recognition becomes intertwined with the machinations of Johan Liebert, who befriends Karl and uses his situation to gain proximity to Schubart and his vast financial empire.

Key relationships define Karl's journey. His friendship with Lotte Frank, a fellow student who works for Schubart, is crucial. She offers him support and becomes his partner in investigating the mystery of Schubart's past and the identity of another young man claiming to be his son. The most pivotal and ambiguous relationship is with Johan Liebert, who is Schubart's Friday Boy. Johan presents himself as a kind and insightful friend, listening to Karl’s painful past and even being moved to tears. He tutors Karl in Latin, leading to a noticeable improvement that impresses Schubart. When Karl becomes discouraged and decides to abandon his plan, Johan convinces him to hand over the rabbit's foot, the proof of his lineage. Rather than using the evidence to impersonate Karl, Johan shows it to Schubart, directly leading to an emotional reunion between father and son. This act solidifies Karl's place as Schubart's acknowledged son, and he later takes the name Karl Schubart. Johan is subsequently hired as Schubart's secretary, setting the stage for his larger ambitions. Even after learning of Johan's sinister nature, Karl finds it difficult to believe that his friend was wholly evil, suggesting that he genuinely felt a connection and believes Johan's sympathy for his plight was heartfelt.

Throughout the story, Karl undergoes significant development. He transforms from a lonely young man uncertain of his place in the world to the confident and acknowledged son of a powerful figure. After the events involving Johan, Karl and his father are reported to be doing well. Schubart, while still involved in business, has become less vicious, and Karl has chosen to continue his education by entering graduate school. He demonstrates a notable ability for quiet determination, enduring his father's harsh criticisms to stay close to him. Beyond this persistence, he possesses no extraordinary or supernatural talents; his strengths are his emotional resilience, his capacity for trust and loyalty, and his fundamentally kind heart.