Did I Just Trigger the Possessive Route of the Most Powerful Mage Alive!?

Giselle is about to be married off to a perverted marquis as a substitute for her younger sister. Desperate to escape, she hatches a plan and heads to the slave market to buy herself a bodyguard.
But what she ends up buying—by accident—is a cocky, sharp-tongued pretty boy named Elvis… who just happens to be a cursed, powerful mage.

He asks for her help in lifting his curse, and Giselle agrees.
But as they travel together, something about him begins to change—both physically and emotionally.

(Wait… did he just grow taller overnight? And why is he standing so close to me now…?)

A cursed, arrogant mage × a kindhearted, unlucky noblewoman.
This is the story of how their first adventure slowly transforms into their first love—
and eventually, something more.