Warehouse, Storehouse
The warehouse radical and the warehouse kanji are the same! You can call it a storehouse too.
Know your radicals, yo!
そう
くら
None
You have a warehouse to store all of your souls (そう). When people or animals you know pass away, you take their souls and store them in your dry warehouse for safekeeping. It's a public service, really.
Imagine if you kept a bunch of souls in a warehouse. This way they can't haunt anyone. And they can't get lost out in the spirit world. The warehouse is best for them.