Starting as a Menial in the Demon Sect, I Sign In for Ten Thousand Years of Cultivation Every Day

[Demonic Cultivator + Invincible + Utterly Arrogant] Su Qi transmigrates to a fantasy world and becomes a lackey in a demonic sect, living every day with his life on the line. Fortunately, he awakens the Overlord System, which grants him ten thousand years of cultivation every day through sign-ins. His cultivation can be poured directly into martial arts, with no pills or resources required. His techniques instantly reach the highest level, and as his status rises, his sign-in rewards grow even stronger! He starts out as a lowly servant in the demonic sect. [You spent 3,000 years of cultivation. The Heavenly Demon Boundless Palm has reached perfection, and your realm has advanced to Martial Venerable!] [You spent 30,000 years of cultivation and finally comprehended the ultimate meaning of the final chapter of the Primordial Emperor Scripture. You have attained the Great Emperor's Dao!] [You spent 300 million years of cultivation. The Great Luo Immortal Art has reached perfection, and you have attained the Dao of a Great Luo Golden Immortal!] A grandmaster in one day! A Martial Saint in ten days! A Great Emperor in half a month! Ascension in two months! From a lowly servant to the supreme ruler of the demonic path, from a small kingdom in the lower realm to the pinnacle of the Three Thousand Dao Provinces. Years later, in the Supreme Hall of the Heavenly Realm, Su Qi is revered by all worlds. "The boundless sea is the shore beneath the sky; atop the highest peak, I stand alone!"