A world where monsters run rampant. A noblewoman falls from grace and loses everything after being falsely accused. But, she started a fresh life as an 'Immortal.' She became an adventurer capable of defeating disaster-rank monsters and taking the heads off ancient dragons with a single swing of her blade. However, behind that cool exterior... beats the heart of a ridiculously over-indulgent mother?! "What should I do, my daughters are just too cute?!" She wields her deadly sword for the sake of motherly love! Ogres flee and dragons tremble at the sight of this overpowered adventurer!