Kururu

A girl the fell from the sky the night a new moon color was discovered. She has amnesia and only remembers her own name and that she is a god of destruction. In her fall she destroyed Kei's room and made Satsuki mad. What Satsuki did to her is unknown, but Kururu wants to never anger Satsuki again.

Decided to complete her mission to destroy the world, she enters the school as a transfer student while she thinks about how to destroy the planet. When she found Kei and apologized for destroying his room, Kei, who was desperate for gathering supporters for his campaign, tricked her into becoming his supporter, in exchange to Kei giving her a curtain to block the morning sun and helping her finding a way to destroy the world...without angering Satsuki.