Claire, a duchess, has her engagement broken by the Dauphin, and then she is executed at the hands of her brother.
The Crown Prince"s love is stolen by a commoner saint, and in a fit of jealousy, Claire tries to bully the saint to death.
I"m sure you"ll be able to understand why. It was supposed to be like that.... But when she woke up, she was 12 years old again...?
If I could start over, I would live a humble and sober life this time. I"m not going to cling to my position as the crown prince"s fiancée, and I"m prepared to give up everything to the saint. So, I don"t want to die...!
In the same mansion is my younger brother, Phil, who is one year younger than me. He was estranged from Claire, who was not related to him by blood. He would fall in love with the saint and kill her in five years. But at least now he"s just a young, adorable boy.
"Phil can be happy with the saint. So.... please.... don"t kill me!"
Claire spoils her brother anyway and tries to ingratiate herself with him. Claire tries to ingratiate herself with her brother, believing that by doing so, she can avoid a ruinous future.
However, contrary to her expectations, Phil has grown very attached to Claire.
....The story is about a young woman who is in love with his brother, but he is also in love with her himself.