Pokemon: Radical Redux - Chapter 268: Charizard lore

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

“Ding, the wind and thunder war eagle has been upgraded, the bloodline is activated, and the dark flame phoenix has evolved!”

“Ding, the Xuanwu level has been completed simultaneously, the current level, the immortal level!”

The aura recovered, beasts ran rampant, and humans lost half of their population in an instant.

The demise of human beings is imminent, and the beastmaster turns out, and human beings have the opportunity to continue to survive.

Today, this is a world of beastmasters for all people.

Su Bai came through and awakened his dual contract talent, and he could have twice as many pets as others!

Based on blood and sweat and passion, Su Bai has become an eternal legend in this world!

- Description from novelbuddy

In the continent of Chang’an humans had lived as livestock and slaves to the Primordial Beasts. These beasts were ferocious, bloodthirsty and overwhelmingly powerful, but even so, the humans managed to prevail in the face of despair.