The Newlywed Diary of a Witch and a Dragon

After spending the night with a recent hire of the Tower of Magic, Wendy Blanchett, a talented young leader of the Rune Research Division, is faced with an impossible dilemma. She fears for her position and reputation when the newbie, Aiden Winters, asks her to marry him. Unbeknownst to Wendy, Aiden seems to have secrets of his own. Will their love blossom, or will his secrets tear them apart? Source: Webtoon