Because, to me, my feelings for Qiqi were no different from yours as her father.
Only then did the Bull Demon King finally feel completely reassured upon hearing Hikaru's words. Since Hikaru could treat his daughter—
—as his own daughter, then surely he would never hold anything back from Qiqi.
Then Hikaru continued:
"Also, when I asked you what was most important to us ninjas, it wasn't just Chakra energy and a tempered state of mind. More importantly—it was intelligence."
As he spoke, Hikaru pointed to his own head, then smiled at the Bull Demon King.
"Big Brother Niu, this is one area where you'll definitely lose to Qiqi."
The Bull Demon King felt unconvinced by Hikaru's words. No matter how capable his daughter was, she was still only a child.
No matter how crafty a child might be, there was no way she could outsmart an adult.
So he gave a disdainful smile and said to Hikaru:
"Brother Uchiha, aren't you being a little too confident? No matter how smart you teach Qiqi to be, she grew up by my side. I know exactly what she's capable of.
Even if she can coax adults into buying her more tasty food, I know all her weaknesses very well. Are you really so confident that Qiqi can defeat me?"
Hikaru shook his head with a smile upon hearing that, then continued:
"Big Brother Niu, you think too highly of yourself. I, Uchiha Hikaru, will say this right now: Qiqi definitely won't be much worse than you.
And I guarantee that after you and Qiqi have a fight, you'll never dare underestimate her again."
The Bull Demon King was greatly shocked by Hikaru's words. Hikaru almost never fought a battle he wasn't sure of winning, and practically every word he said came