How?

"… The trickiest part about making use of your Bloodline Talents is that beasts fight with their bodies but we humans love to use weapons. I can sense a familiar yet foreign Inheritance within you, so I can tell that you've chosen a different path from our Tatsuya Saintly Weapons."

Ryu opened his mouth to say something but his grandfather's smile stopped him in his tracks. 

"Little Ryu, I know that you have a lot on your shoulders. I know how you feel, there was a time in my life where the only thing that mattered to me was living up to the expectations of my own father. Unfortunately, I never got the chance to reach the same height he did, but I gained so much more in return. A loving wife, a loving son, an adorable little grandson…