PhoenixAsh

Aaron, a wildlife biologist, became a military strategist right after a global war between nations began.

He never wanted to participate in the war but he had to, because he wanted to continue his studies on endangered species the moment the war was over, but to his surprise, everyone in his unit were killed, including him, and the next thing he knew, Aaron woke up in the body of a young noble having a similar name to his.

However, he also noticed he had awoken in a world different from Earth. 

In this world, demonic beasts ran rampart with only one thought in mind, causing them to feed on anyone they see, be it humans, elves or even magical beasts as well.

During his first encounter with a magical beast, Aaron awakened a system which allowed him to bond with magical beasts and to obtain terrifying abilities from these bloodcurdling magical beasts, so he used his experience as a wildlife biologist to help make it easier for him to bond with these beasts.

However, Aaron also noticed he could evolve these beasts if their loyalty towards him had reached a certain level, so he vowed in his heart to grow strong enough to protect those he cared about in this world with the hope of living a happy, peaceful life where he'll be able to focus fully on his passion as a wildlife biologist.

My Beast Evolution System

The next morning, the sounds of swords clashing against each other echoed loudly within the courtyard. Diana and Aaron were currently engaged in a sparring session.

Both had been sparring for quite sometime now, and that's why they were currently breathing heavily.

Once again, they both took their stances before engaging in another battle, and while this occurred, Diana noticed a few mistakes in Aaron's movement which was completely different from her sharp and precise movements, so she decided to correct him a bit.

"Lower your shoulders," She barked. "And stop hesitating! A beast won't give you time to think. You should know this more than anyone else,"

Aaron adjusted his movement and his grip tightened on the hilt of his sword, allowing him to easily make a fluid strike which earned him a nod of approval from Diana.

45. Training With Diana .