Go! Magic Lord!

Once upon a time, the Magic Lord started a war with humans, and the Three Great Sages fought against the Magic Lord arduously. One of the Great Sages even sacrificed himself to seal the Magic Lord... 800 years later, when an apprentice sorcerer named Salamander was having the Advancement Test, he accidentally released the hypnotizing gas. Later, it turned out that his pet snake, Fu, can turn itself into a human! Fu took Salamander and ran away from the test. After hearing the news, the Senior Mage who adopted Salamander couldn’t take it any longer. The Senior Mage seems to have an irresistible reason to break the rules for Salamander and promote him to the Grade 1, Star Class. (Source: Webnovel)