Read Manhwa All About The Duke / 공작님의 모든 것
Elia, A Young Woman From High Society Who Goes In Search Of The Missing Winston, The Duke Of A Distant Kingdom, At The Request Of A Friend. She Discovers That He Is A Powerful Wizard Who Turned Into A Child Because Of A Spell. She Decides To Take Care Of Him And Try To Reverse The Curse, But Ends Up Getting Involved In A Series Of Adventures And Confusion.
