The Insipid Prince's Furtive Grab for The Throne Vol.5 Part 2

Arnold is a lethargic prince who is ridiculed by the entire empire as an "insipid" runner. But in fact, he is the most powerful prince with a secret identity as Silver, an SS-grade adventurer who manipulates forbidden ancient magic! The story of the strongest prince who plays the role of an incompetent, and his secret struggle for his twin brother to take the throne began!