Protecting a Merchant Caravan with the Shinobi World's Most Ruthless Man?

What was so strange about a teacher being stronger than their disciple, or their Summoning Beast being larger than their disciple's?

After Gold Fang and Black Fang had moved away from the caravan, Jingyi motioned for them to stop.

"Raise yourselves up and let me take a good look."

Having received the order, Gold Fang and Black Fang straightened their previously coiled bodies, their upper halves rising like two thick pillars standing tall above the sea.

There had not been much of a difference when they were lying in the water, but once both snakes raised their upper bodies, the gap became obvious.

Compared to Black Fang, Gold Fang looked like a burly man beside a lean young man. Gold Fang was a full size larger.

Jingyi waved, signaling that they could lower themselves.

"Gold Fang, when did the difference in size between you and Black Fang start to appear?"

Both had been experimental subjects created in the laboratory, and Gold Fang and Black Fang had always remained roughly the same size. Neither had suddenly grown much larger than the other.

The last time Jingyi had taken the girls around the Shinobi World, Gold Fang and Black Fang had still been about the same size.

How had Gold Fang somehow grown a whole circle larger than Black Fang?

That was rather strange.

Could this fellow have eaten some heavenly treasure or miraculous pill?

Gold Fang raised its huge head in confusion and thought back.

"It seemed to start after I followed Lady Kushina and killed that giant turtle."

The two snakes had always lived together. Although they occasionally separated for a while, they could naturally pinpoint when the difference in their sizes had begun.

"A giant turtle?"

Jingyi froze for a moment. What giant turtle?

Wait, could it have been