My Tang Dao Is Showy

During the awakening ceremony, Jiang Yang awakens an F-rank artifact ability: a rusty Tang sword. Suddenly, a Great Void appears in the city. His girlfriend looks evasive and wants no part of him, while classmates mock him relentlessly and even his teacher shakes his head, urging him to stay away to avoid dragging everyone down. Then, on that fateful day, an Abyssal King-tier beast descends, trapping the entire city in a dead end as all high-level martial artists despairingly wait for death.