Amaterasu's people's problem is that they're idiots.

[Chikusa, no.]

[...Although he feels perfectly justified in saying this. After all, isn't it their fault that Sotero disappeared like that...? Stupid loud recklessness.]

Anyway... There's someone leaving cursed charms around shrines... and setting Amaterasu's temple on fire... and trying to apparently bring about new gods to replace the current ones.

Which I wouldn't care about if they weren't targeting us as much as Amaterasu's lot...