From servant to sudden promotion—her new life begins as a tutor in a duke’s household!

I, Colette, once dreamed of joining the knightly order. But when I defeated my older brother in a sword match as a child, I lost my place in the Kiells family. Treated like a servant by my younger sister and eventually caught in a scheme, I was driven out of the house. Together with Renri, the Kiells family’s butler who chose to follow me, I started a quiet life in a small town of a neighboring country. But after getting caught up in trouble, I end up working at the mansion of the Lashure ducal family—home of the knights’ vice-captain. Melchior Lashure, a taciturn knight known as the “Iron Mask.” As Colette discovers the unexpected side hidden behind his stoic demeanor, she gradually finds herself drawn to him…