Shadow gunner

25th January 2030
In the cold night of the bustling city of New York, a person can be seen standing at the top of a building.
Staring at the dark sky with emotion less face,
Nathan gave out a sigh.
"Finally it will all end...the bloodshed... schemes...life in the dark, to start a new page in my life" Nathan said to the unknown.
Nathan Brown, who is called Scythe in the underworld, is the best assassin the word have seen. Best in every arts of assassination, weapons, but ended as a mere weapon in the hands of politics. He has completed his last mission and is trying to start a new life, a common one. But fate has planned something else.
After taking a smoke he stepped into a taxi to his home. Getting off at an alley he walks off.
Reminiscing his past life he ignores the unusualness of the night.
Suddenly he feels a stinging pain in his chest. Looking down he sees a small bloody wound.
"You shouldn't have left. You lost your choice." He heard someone say that.
"Ha...so this is the end...finally peace... but to be betrayed leaves a bad taste...I shouldn't have let my guard down...still I did know something like this isn't new" Nathan whispered and closed his eyes believing in the end.
But death wasn't the end...it was only the beginning...

In a cold room a boy that seems to be around fifteen years old suddenly opens his eyes.
"I'm not dead?"he asked confused. Suddenly his head starts to pain and memories start to pour in. It felt like seeing someone else's life but also felt like his own. After sometime he opened his eyes.
"I see...so I transmigrated...to think that the things in fantasy novels I read happening to me...is quite shocking."Nathan muttered.
Nathan was a man of few words. During his life as an assassin he has mastered to control his emotions. So even though these events were shocking nothing was seen on his face.

"Hmm..the name of my predecessor was also Nathan. He is an orphan huh... But thanks to unknown, unlike other protaganist he doesn't have any feuds or overcomplicated situation to face...that was a consolation... But this word... it is strange...flying humans and beasts...humans wielding elements? Seems like a cultivation world. This poor chap seems to know nothing much about this world and cultivation. Seems like everyone in this world has something called martial spirits and they awaken it at the age of 15. Mmm..I seem to have awaken a...Gun?? and the awakener seem not to recognise it and classified it as trash? Well can't blame him can I?... In this world where a man can break mountains and iron with his pinky what can a gun do?" Nathan sighed at his situation.
From the memories of his predecessor Nathan understood that this world is far from being normal and is a typical cultivation world. This world is called as the Seventh Orb and everyone has a thing called martial spirits. These spirits are the manifestation of one's soul and are considered as one's aptitude. Eventhough everyone has a martial spirit not all can cultivate. Some has spirits of low aptitude and are called trash spirits. Since his spirit was unknown and seemed to be useless against cultivators defences it was considered trash.
Since Nathan was an orphan he didn't have any previous education or knowledge on cultivation or its true powers. Heck he doesn't even know why this world is even called as the Seventh Orb. He has lived until now by cleaning clothes of others and lived in an old abandoned shack near a river.
"Sigh... even if I was a former assassin and this spirit can be considered as the best tool for me if it can't even hurt a beast what can I do..."Nathan sighed pondering over his future.

Suddenly he felt a pull from his inside...Something was calling him...Something dark....