I'm Done Being a Hero, Unless It's Retirement

Finally, she could retire and rest, but what?! \'I\'m seven years old again?!\' Adelia, the continent\'s first female knight, spent her entire life on the battlefield until she met her end. Now, she\'s back to being seven years old. \'Tomorrow is the academy entrance ceremony, miss. If you don\'t finish packing...\' \'...Academy?\' Before she could even adjust to the fact that she had returned, her maid Sarah placed a suitcase in front of her. Oh, right. That academy had trained Adelia to become a knight, a hero of the empire, and ultimately led her to her death. And now she has to go back there? \'No way.\' Adelia glared at the suitcase as if she could tear it apart. \'Sarah.\' \'Yes, miss?\' \'Unpack everything. ...Burn it all.\' *** Adelia decided to see this as a well-deserved vacation granted by the gods. But then. [Nooo!!!] Not only did the holy sword that shared her past memories return with her, but her aura manifested earlier than expected. What is going on?! I said I\'m retired! This time, I refuse to live as a hero! Unless it\'s retirement!