If Heaven involves Koenma in any form, peace does not exist.

[ Look, he's had to deal with binky breath enough to know that the loud sometimes baby-formed godling is obnoxious and he would easily choose to be rid of him. Yusuke and the others may be somewhat fond of him but.. well. Hiei's got a few bones to pick with his punishments for his crimes. And the fact that he's heard over time the way that Kurama's fate has been tied in with his own as a way to underhandedly have the other demon keep him to heel.

... It's an entire thing. ]

And if Botan has to be the one to take me to Spirit World I would rather be a lost spirit.