[ And back to the Zange show. Since this goddess wants to be in charge for her proper reply. ]

If I stopped the drain, everyone in this town will be dead. The barrier keeps idiots from falling out of scenic nowhere into their deaths and I can't save them at that point because they don't just die, they become nothing. They don't even have a soul anymore at that point.

I can return the mana if I get enough power. And then I can bring everyone back.