From 2D Market:
When a natural disaster hits a devout shrine, can that ever be called divine will? Well, only if gods deal in bad luck.
After such damage strikes Hakurei shrine, in the form of flooding and lightning strike, permanently penniless Reimu must find a way to gather funds to repair it.
After coming to her wits end, Aya comes along and proposes a failproof method to do just that.
She forgets to mention that she has a vested interest in it and that it might not be to Reimu’s liking.