Warrior's Promise: Double Take

Su Mo went from the pride of his clan to becoming the butt end of a joke in a matter of minutes. The former King of Mercenaries from Earth was reborn in a boy's body in a foreign world. But To his dismay, another anomaly brought a soul from Earth that took over.
He used skills of the mercenary life to rise to the top among his peers. However, that training only took him so far. The next step in the martial arts dominated world was to awaken one’s Martial Soul.
The awakening ceremony ended in Su Mo's disaster as he awoke a Martial Soul of the lowest level. A prodigy was now worse than useless as his Martial Soul was too weak! After becoming the clan's embarrassment, he discovered that his Martial Soul was unique: it could level up! This individual martial soul could shake the heavens.
At this time, Su Mo met the love of his life. Soon, the situation may have deteriorated if Su Mo followed the script. Still, Su Mo must rise from the lowest of the low and reach the pinnacle of power to save the love of his life within five years, or she will forever be out of his reach.

Hey everyone, RG1400 here. It's my first fanfic, so don't mind the mistakes, please.
Those who have read Warrior's Promise may find it a bit tiring, but I believe you would enjoy it.
If someone hasn't read it, you would surely love it.
It's a double-take, so the story would follow the original to the bone with a twist.