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Quote:

Originally Posted by Powerman293

However, while the ending was good, it wasn't really clear. Why did Kenzaki have to go so far away? He says its to not be able to fight Hajime but a lot of the Undead were near each other during most of the series. Is the reason why they can't coexist near each other because they will both turn into Jokers and mindlessly fight?

Pretty much, yeah. They're best friends and all, but the urge to complete the Battle Fight gets too strong when they're together. They could try to fight it, but eventually they'd give in and fight until one of them gets sealed, which would once again lead to the potential end of the world.