Board Thread:Versus Debates/@comment-3273613-20151228121621/@comment-26474458-20160102220223

Thekillman wrote: Does Chibaku Tensei require energy to maintain? Because i got the impression that forming it costs chakra, but once created it stays without further cost(since the biggest Chibaku tensei of them all, the moon, still exists even though nothing's sealed inside)

We can't really say. The moon stays because gravity.