Yae Uri Ttal Anieyo!

She says she's not my daughter, so why doesn't everyone believe her!
Six years ago, her ex-boyfriend Cassis, who broke up with her due to a diving breakup, returned as a duke. He said he was sorry for abandoning me. Who was the one who gave the breakup notice? Meanwhile, he sees her 5-year-old niece, Hanael, who she is raising instead o...