Spectre's Final Blade

Su Wei was an ordinary office worker until he woke up back in his high school classroom, only to find himself in a world where students must awaken their soul powers to battle terrifying phantoms.
In this era dominated by spirit beasts, humanity, once rulers of the world, now defends their sanctuaries. 
Hot weapons are relics of the past, while soul weapons reign supreme.
With soul weapons, humans can fight against these supernatural threats.Among them, the most revered are those who rise to the peak of martial prowess, becoming the ultimate protectors of humanity.    
Can Su Wei harness his newfound powers to become a hero in this perilous world?