Movie
Description
Heine Wittgenstein appears deceptively youthful, standing at 155 cm with dark salmon-red hair, pale skin, and large reddish-amber eyes behind thin silver-rimmed rectangular glasses. His signature attire features a black cap lined with white and gold accents and a white tassel, a long black single-lapel trench coat bearing burgundy and white details, a dark brown vest, white collared shirt, gold-tipped black tie, fitted black pants, and heeled ankle boots.

He maintains a stoic, polite demeanor, rarely showing overt emotion even when delivering insults. Beneath this exterior lies deep empathy. Exceptionally intelligent across multiple disciplines, he never flaunts his capabilities. References to his height or childish appearance fracture his composure, which he intensely dislikes. Despite his calm disposition, he possesses formidable combat skills and firearms proficiency. Artistry is his sole weakness, resulting in atrocious drawings, and his living space remains extremely messy, cluttered with piles of books.

His background diverges between adaptations. In the manga, Heine led the Heinrich Family, a Kvel mafia group operating as vigilantes for oppressed immigrants and minorities in Glanzreich, enforcing a strict no-killing rule while using force and economic influence against injustice. After intervening to stop subordinates from assassinating Prince Viktor during a palace escape, Heine was falsely imprisoned. Viktor later offered clemency in exchange for Heine becoming his royal tutor to educate him on Kvel hardships for creating an equitable kingdom.

The anime presents an alternate origin: Heine led homeless children. During a harvest festival, Viktor (then crown prince) befriended him during an unauthorized palace escape. Guards mistakenly identified Heine as Viktor's kidnapper, leading to a chase where Viktor took a near-fatal rifle shot meant for Heine. Enraged, Heine attacked the guards before being subdued and imprisoned for crimes he didn't commit, praying only for Viktor's recovery. After Viktor became king and recovered, he pardoned Heine, who became a tutor at a church for street children before accepting the royal tutor position under the strict condition of immediate resignation if his past were revealed.

Both versions establish his Kvel heritage—a marginalized ethnic group in Glanzreich—and his deep bond with King Viktor, the first person he could trust. This relationship underpins his dedication to educating Viktor's sons. As royal tutor, Heine employs tailored methods: intellectual challenges for Bruno, patience for Leonhard's trauma from past teacher abuse, understanding Licht's secret job, and drawing out Kai's hidden kindness. His teaching philosophy emphasizes firsthand experience over rumors, nurturing hope, confronting reality, and recognizing one's ignorance as the foundation of learning.

Key quotes reflect his principles: "Instead of judging others based on rumors... I must look and feel for myself"; "A teacher's task is to nurture hope, not harm the heart"; and "A person can only truly learn once they realize how little they know." His influence transforms the princes from uncooperative students into responsible candidates for the throne, fostering mutual respect. When his criminal past surfaces and he resigns per his contract, the princes defend him passionately, leading to emotional moments where Heine sheds rare tears—both in relief at Viktor's recovery years earlier and pride in his students' growth.