"He knows so many of my secrets. Now that he's betrayed me, I absolutely can't let him live!" Madara Uchiha thought.
Madara had made up his mind long ago: he would never let Black Zetsu leave alive.
Caught between the two of them, Black Zetsu suffered tremendous harm. The force of it was even more direct than the damage inflicted by ninjutsu.
If it had only been ninjutsu, then as a being without a physical body, he might have been injured, but he could have fully recovered after a little rest.
But a blow like this, one that struck at his very soul, could cause lasting damage if things went wrong. On top of that, his previous injuries hadn't fully healed. If the impact exceeded what he could withstand, even he could die.
If that happened, a thousand years of planning would go to waste, and the plan to revive Kaguya Otsutsuki would be delayed indefinitely.
Neither Madara nor Chen paid any attention to Black Zetsu. The two of them were immersed in the thrill of facing a powerful opponent.
Ever since Hashirama Senju died, Madara Uchiha had never encountered an opponent like this. For someone pursuing the Ninja World's highest level of power, that had been a tremendous disappointment.
Now that he had finally met someone evenly matched with him—perhaps even a little stronger—Madara was undoubtedly thrilled to have found such a worthy opponent.
Of course, he couldn't possibly let Uchiha Chen off so easily.
"I only lost to you last time because I was careless. This time, I definitely won't let you get away!" Madara's eyes burned with excitement, as if he'd found something that delighted him.
Chen couldn't stand the fervor in Madara's eyes. He couldn't relate to that kind of love-hate relationship between Madara and Hashirama.