Reimu tragically died of starvation along with all the other humans, cool snowman though.

pine_tree said:

Reimu tragically died of starvation along with all the other humans, cool snowman though.

All the youkai/gods would also be dead if the humans died

Alixiron said:

All the youkai/gods would also be dead if the humans died

If human faith and fear can manifest, then maybe thirst can, too. In which case, outside world weebs should be able to simp them into existence.