Amelia was the top student in the magic department. However, just before the graduation ceremony, she was dumped by her boyfriend. Amelia snapped when she learned the reason: he had started dating the Saintess, with whom he had partied to purify a 【Calamity (Maga)】.

She boycotted the graduation ceremony, immediately returned to her family home in the countryside, and began helping her father with his material gathering work. Then, an incident occurred that once again enraged her towards the Saintess, and she made a decision. Because the Saintess is said to be the only one who can purify a 【Calamity】, she is revered and can get away with any selfish whim. Therefore, Amelia decided to make it possible for someone other than the Saintess to purify a 【Calamity】.

This is the story of Amelia, who launches a "Saintess Decline Project" due to a personal grudge, and the good-natured knight who gets caught up in it.

※This is not a 'comeuppance' story.

While there may be instances of inadequate communication or a lack of consideration, no one acts with malicious intent, and there are no truly evil characters in this story.

Please note that the side stories written by request have a non-linear timeline.