Saikyou Degarashi Ouji no Anyaku Teii Arasoi

The Adrasia Empire is a powerful nation where the emperor’s children are competing to become the next ruler. While every prince and princess is fighting for the throne, no one expected that Prince Arnold Lakes Adler would become the next emperor. 

For everyone, Arnold seems lazy, untalented, and far less capable of being the next ruler than his twin brother. He spends his days relaxing and avoiding responsibilities, making him look for the weakest candidate. However, he has a secret: he is a Silver, one of the world’s five legendary SS-class adventurers who can get strength from others.