The hero party has defeated the Demon King who threatens the world. However, when the Demon King was about to die, he released a miasma that could destroy the world. “I won’t let everyone’s hard work go to waste. Even if it costs my life…!” While everyone is in despair, the Saint Sophia, a member of the hero party, sacrifices herself to stop the demon king’s miasma. Sophia’s holy magic crystallized and continues to purify the Demon King’s miasma. People all over the world were grateful and hailed her as a great saint. As time passes, the Great Saint Sophia, who has purified the Demon King’s miasma, finally awakens. What awaited her when she woke up was the world twenty years later. Even though she is surprised that her former companions are now uncles and her juniors are now older than her, will she find peace? Even so, she lives in the new world.