Ok, I'm still a little confused about this border thing. I know I'm probably looking too much into this but I just don't understand how Inutaisho, Inu-Yasha and Sesshomaru's father, bariel site can be between the borders...In one of the episodes this young demons father travels to the world of the dead. This place is supposidly the place where all souls go but that doesn't make any sense. That's where their dad is buried, and yet you don't see any other demon souls. It's rather weird how it shows his bones in his dog demon form...Any other explanation? I don't think there's one for this. I probably didn't word it too well sorry.

Probably The World Of The Dogs :D .sorry,but i don't have a clue about this,but when i find one,i'll tell you,and solve your confusion.