My Stepmother and Stepsisters Aren't Wicked

あらすじ

Miya is the illegitimate child of a certain prominent family. When her mother dies, she's convinced she knows what awaits her in her new home: a life of servitude and misery at the hands of her wicked stepmother and stepsisters! Yet when she finally meets the women she expects to treat her like dirt, they actually end up being...sweet?!