Premise Breakdown: My Useless Husband Is the Supreme Archmage
Rowan's Concealed Power and Debt to Serena
Legendary Archmage Rowan spends five years masking his true rank while quietly restoring the noble standing of Serena's family. His silence stems from a life debt owed after she rescued him, turning his immense magical authority into a private tool for her benefit rather than public recognition.
The Divorce and Academy Humiliation
Serena ends their marriage at the precise moment Rowan intends to disclose his identity, dismissing him as a nobody. Soon after, nobles at Northwind Magic Academy mock and belittle him, unaware that the Northern Duke himself kneels in deference to the very man they insult.
Exposure and Serena's Realization
When Rowan's archmage status becomes public knowledge, the power gap is laid bare. Serena discovers she has discarded the kingdom's most formidable mage, turning her earlier rejection into a direct loss of the realm's supreme magical protector.