Prologue
This is not the grand reversal-of-fortune of a female mage who carries a secret of her birth and claims she transmigrated into a character in a romance fantasy.
Nor is it the fierce action drama of the regressed youngest son of the Grand Duke of the North.
Nor is it an isekai in which a wastrel second prince, long plagued by mental illness, abruptly starts shouting about a System Window.
It is only the slice-of-life of a certain knight—a knight who merely hit his head and, in doing so, recovered the memories of his past life as a noncommissioned officer.
A civil servant who, like any ordinary office worker, carries a letter of resignation in his heart at all times.
A story of effort spent in the pursuit of retirement.