A fun twist on the villainess trope. Aunt was supposed to be a villainess that abuses her nephew who is the hero of the story. She recalls her previous life, repents and decides to turn over a new leaf so everyone can be happy. She decides to do what's best for her nephew: get him adopted as soon as possible by his father's rich, powerful family. But when his aristocratic uncle comes to take him away, the nephew decides that he wants her to come with him. He lies to the uncle that the aunt is actually his birth mother in order to keep her with him.
The nephew is a little scammer and watching him and the former villain aunt slowly build a relationship is pretty sweet. They may not know it, but they are two peas in a pod who also really need each other. The slow burn romance of the aunt with the uncle is also nice.