Genius Grandson of the Loan Shark King

Muhyeok Kim, the grandson of the infamous “Loan Shark King,” spent three decades carrying out the family’s darkest tasks, only to be betrayed and murdered under his uncle’s command. However, instead of dying, he mysteriously returns to 1990, back to his first year of high school, with a chance to change everything. His first action is saving his paternal grandmother from a deadly heart attack, but the medical expenses leave him desperate for money. To secure what he needs, Muhyeok approaches his mother’s side of the family and gets close to the Loan Shark King once again. This time, however, he is not there to serve him — he intends to take everything from him and get the revenge he has waited years for.