A long time ago. 

It was when Grid was a duke of the Eternal Kingdom. Grid and the members of Overgeared were taught swordsmanship by Piaro. They learned valuable lessons. They didn’t gain strength that was expressed in numbers, such as their level or stats going up. 

Nevertheless, those who learned swordsmanship from Piaro clearly became stronger. They quickly learned the know-how that should’ve been gained through actual combat. It was why Piaro was praised as the pillar of the Overgeared Empire. 

Defeating the great demons who invaded the surface, leading the war against the kingdoms hostile to the Overgeared Kingdom, and resolving the food shortage by turning all types of devastated land into rice paddies and agricultural fields—in addition to his numerous achievements, Piaro was the teacher of Grid and the Overgeared members. 

He was treated more highly than a meritorious retainer by the people. He was a big shot among big shots. 

“Please teach your junior as well.” 

Piaro went to Sword Saint Muller and bowed his head. It was after Grid declared the hell expedition. The heroes of the empire scattered all across the continent for training, but Piaro remained in Reinhardt. It was because the best teacher, Muller, was in Reinhardt. 

Muller...