Muichiro added, "And it's exhausting. My brother and I only tried it for a little while, and we ended up sitting on the ground, completely worn out."
Only then did Tetsu no Sosuke breathe a sigh of relief.
If these two boys told him tomorrow that they'd mastered Constant Concentration, Tetsu no Sosuke might as well drop dead.
There was no reason the gap between people should be that big!
Granted, Tetsu no Sosuke had been able to use Breath of the Sun almost instantly. But that was mostly thanks to his Golden Finger.
Without its help, there was no way he could have mastered the impossibly difficult Breath of the Sun so easily.
As for these brothers... perhaps they were simply meant to learn it?
After a thousand years, Swordsmen capable of using Breath of the Sun had once again been born into the Tsugikuni bloodline—and there were two of them.
"Shame one of them's a blacksmith," Tetsu no Sosuke said, glancing at Yuichiro. Then he smiled. "Though that's not bad either."
The two boys turned to him. "What?"
"Nothing. Let's head down the mountain and eat."
Starting the next day, Tetsu no Sosuke put them through physical training.
Whether they planned to forge iron or learn Swordsmanship, physical fitness was essential.
Yuichiro had it easier; he only needed to build his strength. Muichiro had to train his reflexes, speed, and ability to track movement as well as his fitness.
The training was grueling. Within two days, both boys could barely lift their arms and legs.
On the third day, Tetsu no Sosuke woke them early again. They had someone to visit today.
Big Hammer had already been fitted with seats. The boys were clearly in no shape to walk, so they rode on his back while Tetsu no