Yuya nods once. "I think so. People are supposed to move on to Soul Society when they die, but if they don't they get corrupted and it makes them violent."

It's kind of a weird name for it, he thinks, but he gets the premise. People die, purify their souls, and then try again in a new life. Except that's the natural order of Zangetsu's world, and he's pretty sure it's not for his. He doesn't know, though, he's never seen the afterlife.

"You have human sisters?" Zangetsu's specific origins are just getting more confusing, though.