She’s Not Our Daughter!

Read manhwa She’s Not Our Daughter! / 얘 우리 딸 아니에요!
Six years ago, Sierra broke up with her ex-boyfriend, Cassius, without a word. Now he’s back as a duke, claiming he regrets abandoning her. But wait, wasn’t she the one who ended things? To make matters worse, he starts getting strange ideas after meeting Hanael, her 5-year-old niece whom she’s been raising in place of her sister. “I had no idea, Sierra. I never knew you were raising our child all alone…” Hanael, who had been hiding, suddenly yells at Cassius instead of being shy. “Please, stop denying it… our relationship, and our child.” “You’re a bad man! You abandoned us!” No, Hanael, he didn’t abandon you. And I’m not your mother!