(MC POV)
I raised an eyebrow at the two fox youkais, "Did you two… Try to force open the impurities?"
Both of them tilted their heads at the same time.
"Was that not what we were supposed to do?" Kiyomi asked, confusion clear on her face.
I chuckled, "Well, I think you both already know what happens when you bash against the wall with all your strength right?"
They nodded their heads slowly.
"Ahaha, there's a reason why it's called impurities, my dears," I chuckled. "Use your Quarks to chip away at the wall little by little and covert the chipped away parts into your own energy. Slowly, your strength will grow and it will get easier and easier to break down the wall. They aren't obstacles, they are still a part of you. It's like dusting your table, you don't hammer at it to get rid of the dust."
Their eyes widened in realisation, the both of them obviously having not considered that.