But don't you think that Rin is the vessel Satan needs to reach the Earth while Yukio was made for the happiness of his mother? but since they both have the same blood something is wrong with Yukio? He's just a lost child
I guess that is correct, Yukio's state right now occured probably because since he was young he acted above his age, he was smarter than other kids, more obident than other kids, all adults around him kept pushing their expectations on him . And now, thought he is only 15, he is emotionally is just a kid so he crumbled real quick
I think that is right!?
I think that the reason Satan had twins was because he wanted a son for yuri but also a second child(Yukio) to act as his vessel so that he could live on earth with them. It makes sense that someone carrying his blood would be a lot stronger and so could cope with his "ego". That's the idea I've gotten from the recent of chapters.