I'm Invincible for One Second Every Day

Modern worker Su Chang'an transmigrates to the crumbling Banmu Sect in the Canglan Realm and binds to the Wealth-Dissipating System. He remains mortal forever, gaining only one second of invincibility and a single defense card daily. The system rewards cannot be used personally but can only be gifted to others to forge unbreakable death-bound contracts. Posing as an incomprehensible ancient ancestor, he recruits disciples Chu Changfeng, Yun Zhao, and Hu San, summons the Ghost Calculator Bu Xuanji, and invites Saints and Great Emperors to resolve life-or-death crises including blood demon revenge, the Ninth Heaven's invasion, the Seven Families' alliance, and the Blood River Emperor's vengeance. He transforms Banmu Sect from ruins into the top sect in the Canglan Realm, ultimately shocking the Blood River Abyss Lord from a higher dimension with his movements.