Useless Sword Master: with the Blessing of the System, I Can Kill Through the Three Realms

Lin Feng, who was originally the genius of the sect, was brutally plotted by his cousin and his fiancée. His Dantian was destroyed and he became a laughing stock. When he was on the verge of death, he accidentally activated the [Demon-Slaying Upgrade System] and embarked on the road of changing his life against the odds. With the help of the system, Lin Feng can upgrade, equip and learn magical skills by slaying demons and enemies. Starting from revenge against the traitors of the Qinglan Sect, he swept everything with his invincibility and rose rapidly. As his strength skyrocketed, his stage expanded from the sect to the Cultivation Continent, and then to the vast world of immortals and demons. He counterattacked all the way, subdued the ancient beasts, met a peerless beauty, and founded the supreme sect. Finally, with a killing sword, he put an end to all the dark turmoil, climbed to the top of the Three Realms, and became the only supreme swordsman in all time.