MTL - Space Doctor: The National Hero is a Girl - Chapter 6 let you out

A young boy named Chen Zong got lucky and found a mysterious Sword Seal. With the help of it, he rose to be a God in Sword who defeated innumerable top talents in all universes from a remote borderland.

- Description from Novelupdates

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.

Cheng Zhu, a young and accomplished individual, stumbled upon a question online: 'If you had the chance to be reborn and go back to the past, would you take it?'As someone recognized in his circle for having the most 'spirit', Cheng Zhu scoffed at the thousands of comments from people wishing for rebirth.He responded with a simple 'No', alongside a screenshot of his impressive bank balance.But in the next moment... he was reborn!

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.