In the Meine Liebe series, the title of Headmaster represents two distinct figures, each leaving a unique mark on Rosenstolz Academy.

Headmaster Bartholomew, an academy alumnus, governs during the first season. He staunchly preserves traditions like the nobility-exclusive Strahl candidate system. Operating as an information conduit, Bartholomew safeguards confidential alumni correspondence in a hidden safe and relays global intelligence to the king. His hands-on approach includes offering disgraced graduate Josef Torger a teaching post and confronting him personally to combat corruption. Bartholomew vanishes abruptly before the second season, triggering institutional instability.

Succeeding him in the second season, Headmaster Werner—unlike most faculty—never attended Rosenstolz. He enacts sweeping reforms: opening the Strahl class to commoners and dismantling aristocratic admissions. These changes ignite fierce internal conflict, fracturing the academy's social foundations. Werner's agenda later emerges as fulfilling Bartholomew's unrealized plans and atoning to his estranged half-brother, intertwining institutional overhaul with personal reconciliation. His tenure unfolds amid escalating crises: treason accusations against Duke Ludwig von Mohn and foreign infiltrators undermining Kuchen's sovereignty. The Strahl candidates confront these external threats while adapting to Werner's transformative policies.