When the fourth prince shows up, he's all excited to see his brother, the fifth prince. The fourth prince has just given his brother a special potion that's supposed to heal the dragon's body, but the potion is poisonous and can easily kill a cow with just a single dose. The fifth prince is all, "wait a second, what's this potion for? It's not good for my body, it's bad for you, and I'm going to use it to kill you." He's so excited, in fact, that he wants to kill his brother right now. But the potion isn't good for him, and he can't even take it. He wants his brother to open his mouth and give him the potion, but his brother won't let him do it. The potion is a "poisonous magical pill," which means that if you use it for spiritual energy, it can kill ten cows in one dose. So, the potion's really bad for your body, and you're going to have to kill a bunch of people to get it to work. The king is totally confused, and the guards try to hold him down, but he just wants to eat the potion anyway. He says that he only has one throne, and that he'd rather die than let someone else die. The guards are like, "hold him down." The king says that the potion was made for him by the prince regent