Why Did Rozemyne Execute Hasse's Mayor?

Rozemyne Did Not Personally Kill Hasse's Mayor

The title needs one important correction. Rozemyne is politically involved in the mayor's downfall, but she is not the person who casts the spell that kills him.

At this point in Ascendance of a Bookworm, Myne has become Rozemyne, the adopted daughter of Aub Ehrenfest and the new High Bishop. Her status gives her authority over the monastery project and places her inside the ruling family, but she is still a child being trained in noble society. She has not yet attended the Royal Academy or learned the specialized execution magic used against traitors.

Ferdinand, a former archduke candidate with the necessary training, carries out the sentence. The punishment is backed by the authority of Aub Ehrenfest, not by Rozemyne acting as an independent ruler.

What Rozemyne chooses is almost the opposite of what the question implies: she works to prevent the mayor's crime from becoming a death sentence for everyone in Hasse. Her compromise saves most of the town while accepting that those judged responsible for the rebellion will be executed.

How the Hasse Monastery Conflict Begins

The crisis grows out of Rozemyne's attempt to expand papermaking and improve the treatment of orphans outside Ehrenfest's capital.

A new monastery is constructed in Hasse to house gray priests and support a future workshop. When Rozemyne investigates the town's orphanage, she discovers conditions that offend her modern and commoner sensibilities. The mayor treats the children as resources belonging to the community; they can be worked or sold when doing so benefits the town.

Four children - Nora, Thore, Marthe, and Rick - move to Rozemyne's monastery. The situation is especially urgent because the girls are tied to an existing sale arrangement and the siblings do not want to be separated.

Rozemyne initially sees the mayor's behavior as obvious proof that he is corrupt. Ferdinand shocks her by explaining that many things she finds morally repulsive are not, by themselves, crimes in their society. The mayor has authority over Hasse's orphans, and cultivating nobles through gifts and favors is not automatically treated as corruption.

Rozemyne has therefore interfered with local rights and contracts without fully understanding them. Those arrangements are later settled properly. The mayor, however, escalates the dispute far beyond a disagreement over the children: after losing control of the orphans, he mobilizes townspeople against the monastery.

Why Attacking the Monastery Counts as Treason

To a modern viewer, commoners trying to reclaim children from a monastery might look like a riot or property dispute. Ehrenfest's nobles see something much more serious.

The monastery is a white building created through archducal magic. These structures are tied to the ruling family's mana and authority. Attacking one is therefore treated as an attack on the archducal family itself.

That transforms the mayor's action into rebellion.

The monastery's protective magic prevents the assault from succeeding, but failure does not erase the crime. The mayor encouraged subjects under his authority to attack an institution associated with the Aub while Rozemyne, the Aub's adopted daughter, was responsible for it.

His old political instincts make matters worse. The mayor had enjoyed ties to Bezewanst, the former High Bishop, and behaves as though those connections can continue protecting him. But Bezewanst is gone and Veronica's political dominance has collapsed.

That is the legal reason the mayor dies. He is not formally executed because Rozemyne disapproves of selling orphans. His decisive offense is treason against the ruling house.

Why All of Hasse Could Have Been Punished

The most disturbing part of the storyline is that executing only the mayor's faction is the merciful outcome by noble standards.

Collective responsibility is deeply embedded in Ehrenfest's political order. When subjects rebel against the archduke, nobles do not necessarily divide guilt according to modern ideas of individual criminal liability. A town that rises against the ruling family can itself be treated as rebellious.

That creates a horrifying possibility: Hasse could be destroyed and its population punished for the attack.

Ferdinand forces Rozemyne to understand that saving the mayor at all costs would not automatically save lives. If the government cannot identify a smaller responsible faction and show that the rest of Hasse has rejected the rebellion, punishment can expand outward.

Rozemyne therefore changes her objective. Rather than trying to erase all consequences, she works to separate the instigators from residents who followed them, misunderstood the situation, or no longer support them.

Hasse still receives collective penalties. The town faces increased taxation for years and is denied one Spring Prayer, meaning it loses the usual infusion of mana intended to support the land and harvest. The surviving population is spared execution, but not punishment.

What Rozemyne Actually Chooses

Rozemyne's meaningful choice is to allow the mayor's faction to be punished in order to save Hasse as a whole.

Ferdinand makes the crisis part political test and part education. Rozemyne must weaken the mayor's influence, help the residents understand that his old connection to the former High Bishop no longer protects them, and ensure that someone can govern after his removal. Richt becomes important to that transition.

Rozemyne also confronts the mayor through his own assumptions about authority. When he seeks mercy, she asks him to consider how he would respond if people under his control harmed those important to him while claiming ignorance. His insistence that ignorance would not excuse such an offense undermines his own defense.

Her role is morally complicated. She is neither an innocent bystander nor the executioner. She participates in isolating the condemned faction, accepts that they will die, and presents the punishment as a member of the archducal family.

At the same time, her entire strategy is aimed at keeping the consequences from swallowing the rest of Hasse.

The Door of Judgment and the Actual Execution

When Ferdinand and Rozemyne return to impose Hasse's punishment, they need to demonstrate that the rebellion has truly been isolated.

Ferdinand uses the Door of Judgment, a barrier based on Schutzaria's protective power. Residents are made to pass through it. Those without hostile intent can cross; people who still harbor harmful intent toward the protected side are repelled.

The ritual turns an invisible political question into something the assembled commoners can see. The mayor and the remaining hostile members of his faction are separated from the larger population and restrained.

Ferdinand then performs the execution magic. The official anime glossary describes it as magic taught only to archduke candidates: it targets the registration medals used for citizens, burns the medals, and causes the condemned people to petrify and ultimately disappear like ash.

Rozemyne is ordered to watch.

That detail is essential. Ferdinand does not let her enjoy the political benefit of a narrowed punishment while remaining insulated from its human cost. If she is going to exercise the ruling family's authority, he expects her to understand what that authority can do.

Ferdinand's Lesson Is About Power, Not Revenge

Ferdinand's handling of Hasse can look cruel, especially because he makes Rozemyne witness the execution. Within his worldview, however, the lesson is practical.

Rozemyne has entered noble society with values no ordinary noble child possesses. She remembers modern Japan, was raised as a poor commoner, worked among merchants, served in the temple, and is now expected to function as an archduke's daughter. Those moral frameworks regularly conflict.

Hasse makes that conflict impossible to ignore.

Rozemyne initially labels the mayor evil for behavior noble society considers legal or ordinary. Ferdinand redirects her toward the act the ruling class considers unforgivable: rebellion against superior authority. Conversely, the punishment nobles consider acceptable strikes Rozemyne as horrific.

He also teaches her that mercy must be made politically viable. Simply saying "do not kill them" is insufficient if the established response to treason is broader collective punishment. Rozemyne needs a clearly isolated guilty faction, replacement leadership, an explanation acceptable to nobles, and penalties severe enough that Hasse is not seen as rebelling without consequence.

Her compassion succeeds because she learns how to work inside the system, not because the system adopts her ethics.

Why the Scene Is Morally Uncomfortable

Calling the event "Rozemyne executing a bad mayor" turns one of Ascendance of a Bookworm's most unsettling political episodes into a simpler morality tale than the novels present.

The mayor is exploitative, arrogant, and responsible for a disastrous attack. That does not make every aspect of the punishment comfortable or proportionate by modern standards. The execution is public and intentionally terrifying. Innocent residents are economically punished. Withholding Spring Prayer can hurt agricultural productivity. The whole process reinforces a social order in which commoners have little leverage against nobles.

Rozemyne understands that discomfort. She does not emerge from Hasse believing the system is good, nor does she have the power to replace it. She instead becomes more aware that her new status implicates her in structures she cannot ignore.

Her horror at the execution is therefore compatible with the choice she made. She accepted what she regarded as the least catastrophic outcome available: a limited group dies instead of an entire town being treated as traitorous.

The sequence also complicates Ferdinand. He can view the narrowed punishment as exceptional mercy while knowing Rozemyne will experience the spectacle as horrifying. Their differing reactions expose one of the series' central ideas: morality is shaped by the social world in which people are raised, and gaining power does not free Rozemyne from that world's rules.

Light Novel, Manga, and 2026 Anime Continuity

The published light novel is the clearest source for the Hasse storyline. The conflict begins in Part 3 Volume 2, while the punishment and execution occur in Part 3 Volume 3. The completed English main series is published by J-Novel Club.

The Part 3 manga by Ryo Namino adapts the same period of Rozemyne's life but follows its own serialization and collected-volume pacing. Its numbering should not be treated as interchangeable with the light novel.

WIT Studio's television adaptation Ascendance of a Bookworm: Adopted Daughter of an Archduke reaches the Hasse punishment material. The anime's official terminology page defines Hasse, white buildings, the Door of Judgment, registration medals, and the execution magic, confirming the legal and magical framework behind the event.

The anime compresses some of the internal argument and political reasoning that the prose explores in greater detail. The central point remains unchanged: Rozemyne helps determine and administer Hasse's punishment, but Ferdinand actually executes the mayor. The mayor dies for treason against the archducal order; Rozemyne's defining choice is limiting how many other people must pay for that rebellion.