I Gave His Sister My Blood 300 Times

For three years, Angel has been the family's human blood bag, forced to give blood to Windsor, the adoptive sister of her husband Mason. When Windsor was assaulted, Mason believed Angel was behind it, and he has punished her ever since, threatening her ailing parents whenever she hesitates. After her three-hundredth donation, Mason's men drag her to a hound yard and force her to face a drugged black mastiff while her parents are made to watch.

Mason demands an apology to Windsor and promises marriage in return, but Angel stays silent. Her parents take their own lives before her eyes, and the hospital has already told her to prepare their funerals. When she tells Mason they are dead, Windsor's tears turn his shock into rage, and he orders their medical care cut off, unaware they have already passed.

Drained of 800cc of blood, Angel collapses, and when she wakes at the Bryant mansion, she is ordered to cook for a celebration while her parents' bodies still lie outside the hound yard.