Akuma wo Aishitara

Isabella lost her parents and raised her younger brother, but it wasn’t easy—she went bankrupt taking care of the two of them and wound up destitute. She was running out of options when Jeremy, a handsome millionaire, reached out to her. He offered to support Isabella financially if she would become his mistress. In desperation, and despite the cold look on his face, Isabella accepted his terms... But when the time comes, will she be able to hold up her end of the deal? (Source: Harlequin)