"I was expelled from the mansion where I had been secluded for many years with the words 'Your research is no longer needed,' so I've decided to live freely as the legitimate successor to the Great Sage. ~Before I knew it, I was confessed to by my disciple and had become a Great Sage surpassing my master~"

"You are to leave this mansion at once." Tilura Istir, an orphan taken in by the great sage Shaltia Istir, had spent many years absorbed in research with her master to defeat the Demon King. One year after the death of her master, the great sage Shaltia Istir, Tilura continued her research alone in the mansion when an official claiming to represent the Magic Regulation Association arrived and ordered her to vacate the premises immediately. "Is my research no longer needed?" she asked. He answered thus: the Demon King had already been defeated and the world was now at peace. Tilura, having lived in isolation, was unaware that the Demon King had been vanquished. Tilura was cast out of the mansion. But in exchange, she was free. There was no more master pestering her about training, training. No more master ordering her to cook meals, heat bathwater, or massage his shoulders. Yet she felt a little lonely, perhaps because she had not interacted with anyone but her master for so many years. And so she left the royal capital and headed to the countryside. She thought the countryside would need a mage. But she did not know: that in these times, only a handful of people could use magic of all attributes. "Why am I the only one who can use all-attribute magic?! This makes no sense!!" This is a story of Tilura, a shut-in girl, unknowingly surpassing her master, the great sage.