Shouwaru Tensai Osananajimi to no Shoubu ni Makete Hatsutaiken o Zenbu Ubawareru Hanashi - Vol. 1 Ch. 6

[NicholasTurner]

Every panel we see the sky it's clear blue (gray since manga?) with a smattering of clouds here and there, she even mentioned that the weather forcast was 0% chance of rain, then the sky is suddenly covered in a blanket of clouds that somehow teleported in and started pissing rain out of literally nowhere.
Which god did this girl piss off to such a biblical degree?