The Banished Former Hero Lives as He Pleases: Volume 2 by Shin Kouduki

After being banished from the Duchy of Westfeldt, Allen continues his freewheeling journey, putting the powers he’s retained from his past life to good use in order to assist Princess Riese and her knight, Beatrice. As ever, his ultimate goal is to enjoy a quiet and carefree existence, but things change when the leader of a revolt in the royal capital is revealed to be Allen’s own brother! What exactly is the House of Westfeldt planning? And what familial trauma lurks behind their intrigue? As the capital overflows with madness, Allen is forced to put his dreams of a peaceful life on hold and leap back into the fray!