Call the guards to take him away
From Create Your Own Story
You move your sword next to his neck and he winces ready for you to slice him open. Instead you call for your guards who rush over and pick him up. He glares at you but says nothing. To be honest you can still just kill him but unlike your foolish dad there would be no point in it. Besides. Out of your four other siblings Markus is the one you hate the least. He's amuses you just enough to the point where you don't wish to spill his blood just yet. You consider what to do with him now. You consider just locking him away in the dungeon but then relize that if you really want to be amused by him you can keep him in your personal bed chambers for servicing your needs.