The Secret of the Friendly Duke

Reading manhwa The Secret of the Friendly Duke / Secret of the Affectionate Duke / 溫柔公爵的祕密 / 다정한 공작님의 비밀

Summary:

Noelle Miceria is the bastard daughter of a noble family and suffers abuse from everyone in the house.
One day, Noelle overhears her step-father's terrible plan. That night she asked the help of her friend, Zion, who came to visit the family.
When she came to her senses, the people who had bullied her had been killed. The culprit was Zion; turns out that he knew how to wield magic.
"What do you think, Noelle?"
Zion offers Noelle a life-changing offer to work for him. From that day on, Noelle started to live in Zion's mansion and work as his assistant
Dear friend, Duke, and wizard, these are all Zion's titles but does Noelle really know Zion?
An original romance fantasy you've never seen before!