Since the Storage Pouch had been successfully developed, Cain temporarily set aside everything else and began working hard to improve his strength.
Through constant grueling training, he had already adapted to twenty-six times gravity, while Erza was still pushing toward fifteen times gravity.
The reason he had progressed so quickly was all thanks to the pure energy continuously flowing from the Brilliant Radiance in his chest.
Cain discovered that the harder he pushed himself, the more energy flowed from the Brilliant Radiance. This energy constantly nourished his body and increased his magic power.
And with that pure energy nourishing him, Cain pushed himself even harder.
As the saying went, if training did not kill you, train until it did.
At first, Erza had been worried whenever she saw Cain drain every last ounce of strength from himself during training.
But later, she discovered that after just one night, Cain would be full of vigor again, so she finally put her worries aside.
Erza's progress might not have seemed as outrageous as Cain's, but in truth, she was already improving very quickly. Her only disadvantage compared to Cain was that she could not absorb medicinal effects one hundred percent like he could.
Cain, however, could completely absorb the pure energy flowing from the Brilliant Radiance.
And that was only after Cain massaged Erza after every medicinal bath to help her absorb the medicine more effectively.
Of course, such intense exercise also required nutritious food.
Ever since Gray and Cana learned that there was often delicious food at Cain's house, they began visiting frequently.
Since neither of them trained as intensely as Cain and Erza, they quickly put on weight.
When Gildarts returned from a job, he had nearly failed to recognize Cana.
From then on, the two of them learned their