In this chapter, we learn that the three of them are going to try to force their way through the doorway between the mortal plane and the other side of the astral plane. They're going to do it by using the "essence of my ruler" , which is the "true form" behind the "ruler" . This means that they'll be able to go back and forth between the two worlds, and that they won't have to return to the "mortal plane" anymore. This is a big deal for us, because we've been waiting for this whole chapter to happen. Anyway, we're about to find out what's going on when the three guys run into each other. The three guys are all freaking out because they can't get through the door. They don't want to go through because they're the source of all the evil that's been going on in the world. They want to get back to the real world so that they can stop erika from getting mad at meliodas and killing him. They also want to kill him because he's a threat to erika and the demon lord . So they run into the door, and they find out that it's the "final ultimate secret art" that causes the "life force" hidden within them to "sally forth" and strike down their enemies. It's kind of a crazy scene, but we'll get to it later.