The Siblings Get Physiques

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As it was getting late, and I saw how my father managed to help them release all their Ki, I thought it was about time for my siblings to develop proper Physiques. For that, I required a couple of materials compatible with them, which I already had. And alongside that, their time and patience.

"A Physique? What's that, big bro?" Asked Anna.

"Yeah?" Allan wondered.

"It is the power to develop an innate ability inside of your own physical body." I explained in the simplest of terms. "It will help you become much stronger physical, much more agile, much tougher, and above all, help you have a larger stamina and vitality reserves."

"So the reason why dad is so strong is because of the Physique?" Anna asked.

"Is it?" Allan tilted his head.