Sara Blue wolf is a reincarnated person that were in her last year of university, she die in an unfortunate accident and reincarnated as what she is now, a noble woman  and first child and daughter of a duke household with a tradition where the first child of the family needed to go to the Knight order to serve the crown, she lived her life and ended being a commander of her unit but in one of her missions she rejuvenated and transported  back to earth were she become again a student and  again have a normal life when she again go to the same world where she reincarnated, but this time she not die, but she was hero summoned like all the light novels she like to read!