C90 Immortal Arts Ninjutsu

After a day of rigorous training, Hong administered the God Level Healing Arts to an exhausted Naruto. With his energy restored, Naruto was eager to resume his training immediately. But Hong intervened.

"Naruto, do you understand that haste makes waste?"

It seemed, however, that Hong had underestimated Naruto's impulsive nature. Seeing Naruto's blank expression, Hong felt compelled to elaborate