Alex, a brave and heroic 40-year-old serial killer who dies in a big fight, trying to save the human world from a group of invaders."I will not allow Invaders to destroy the human world in my presence. I will not allow this as long as I'm alive! " Alex exclaimed. This was his home, and there was no way that he was going to allow for it to be destroyed.

But during the fight, Alex was outnumbered by the invaders, during one of his attacks. Caught off-guard, in a blink of an eye, he was overwhelmed and stabbed three times directly in the chest by the invaders' leader who relied on a sneak attack to eliminate the enemy.Ending up with grievous injuries, severe bleeding and breathing difficulty due to his lungs being pierced, Alex succumbed.

However, fate seemed to have other plans for him. He was transmigrated in another world in a body of a 20 year old young man."Wait , how am I alive? Where is this place? Is this the afterlife?" Alex remembered clearly the pain that he had undergone before he died.

It was just that, he didn't understand how he was alive.He looked around, only to realize that he was inside a small room that was old and only possessed a few crucial items such as the bed that he was lying on, and a chair and a table not far away from where he was.

He managed to get out of bed with a lot of difficulty and headed towards the only window of the room.Peeping out the window, he saw a group of people moving around. From time to time, he could see that some other people were flying in the air without any external assistance. This was something that amazed him.

"This must be a fantasy world, where the strong prey on the weak, the monsters being enemies of humans." Alex muttered to himself as he looked out the window with awe and amazement in his eyes.

In his world, although they were strong, they mainly depended on technology to combat the invading aliens. But here, this was definitely a world that focused on arcane powers.All of a sudden, Alex was attacked by an immense headache.

In the next moment, a flood of memories poured into his mind.After about five minutes, everything receded. He finally realized who the body that he had taken over was. The young man whose body he had taken was called Alex, just like himself.He was an orphan who had been having a difficult time surviving. The house that he was in was the only thing that his parents had left for him.

Alex wanted to understand more about himself when suddenly, a holographic screen popped up in front of him with a notification sound.

[Congratulations to the host for getting bound to the Universal Assassination System.]

[The host will be granted missions by the Universal Assassination System. Immediately after successful completion of the mission, the host will receive rewards from the System.]

[The host will be summoned through the System to take missions universally, across different worlds. After completing the missions, the system will always transport the host back to the current world.]

Alex was once again stunned. He looked at the prompts in front of him as the information sank into his mind. Just as he was trying to comprehend the information, another prompt appeared.

[The host's stats are as follows:

Name : Alex

Race : Human being

Age : 20 years old

Profession: Assassin

Rank : E

Power Level: 4

Skill: Stealth, parkour, Shadow blink.]

[ The host will receive the first mission in at most 1 hour...]