Hakuchou ni Narenai Imouto

When Rafael unexpectedly proposed, Cora couldn't believe what she was hearing. Rafael had brought her to Spain to work for him, but she never expected he'd want her as his wife. But all Rafael really wants is to fulfill the required conditions in order to buy land. The moment she finds out he's only using her, Cora is devastated. Of course a gorgeous man wouldn't love such a plain woman like her. But then why did he choose her to propose to? (Source: Renta!)