The Grixy Region.
Grey and his friends could be seen sitting quietly in a tavern, they were staring at a mansion that was some meters away from the tavern.
They've been here for two days now, and they've been monitoring the movements of the Family staying inside the mansion. This was the Family the Second Prince told him to come investigate about their ties with any of the Princes, not those vying for the throne, but the casual Princes.
According to the information the Second Prince has gathered, one of the Princes would visit the Family in a few days, so all Grey and his friends needed to do was wait for the Prince's arrival and then listen to their conversations. Once they've confirmed it's related to what the Second Prince guessed, Grey and his friends would step out, under the banner of the Royal family and with the backing of the Second and even the First Prince, they could do whatever they deemed as punishment to these people.