President Cornelius stopped the spar after gauging the power of Azzy's undead protector in one move. After all, if he goes all out, whether he wins or loses, he will be the one to lose his face. So, he felt that there was no point in prolonging this battle.
At the same time, as the president of the world's biggest organization, Cornelius also knew that he cannot show signs of weakness on his face either.
Hence, as soon as he healed himself, he calmly walked toward Azzy and said, "Now that I have understood how good you are in offense and defense, we can put an end to this test right away. I believe that you are perfect to become a member of our prestigious Zero Squad. Maybe, one day, you might even lead in the future. You have such potential, Mr. Azrael.