Actually, I Was the Real One

Story:

To get the love and recognition of his father was Keira's only goal. However, Cosette appeared, who was able to get everything the girl wanted. Kiira was executed for not being the Archduke's own daughter. On the last day of her life, Cosette whispered to Keira "You were really real." But no one cared any more who the child was. As soon as the sentence was carried out, Keira went back in time. She was tired of constantly pushing herself out of her way in order to be worthy of her father. She is tired of this hopelessness and will now act as she wants to. However, there is something strange about the behavior of the father, who previously remained indifferent.