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 beast roared in pain and its movement became erratic. The archers quickly nocked another arrow and aimed straight at the other eye, and the beast staggered a bit but Aaron used this opportunity to charge forward and he landed a strike on the beast exposed flank, but this only forced the beast to violently lash out its tendrils on all directions.

Meanwhile, Diana swiftly moved to intercept the tendrils and her blade flashed as she cut through the dark tendrils of the beast, forcing it to let out a loud deafening roar.

The beast swiftly gathered miasma to release a massive pulse but Aaron activated {Dual Strike} to link his mind with that out of his beast.

Now, his three beasts knew exactly what was expected of them.

"Now!!!" He shouted and Glimmer, Thunder and Blizzard focused all of their attacks on the beast.

72. The Lightheart Citadel.