Kami-chan

The god of this world, and the very one who summoned the protagonist group here.
She prefers to be called "God-chan" rather than "God" or whatever—somehow acts like you're buddies.
She is the type who won't leave you alone, possessing people's bodies (usually Nozomi-sensei's) to meddle in everything, yet never says anything useful.
Tread carefully—she nags endlessly.

Translated from official website