One night, Yasaka Mahiro finds himself under attack from a mysterious monster. In his moment of need, a silver-haired, green-eyed girl appears.
"I'm the chaos that always crawls up to you with a smile, Nyarlathotep."
Identifying herself as the deity from the Cthulu Mythos, she claims to have come to protect Mahiro. However, she tricks Mahiro into leaving his home, goes shopping at anime shops, and in general mixes business with her personal affairs. Meanwhile, they are assaulted by another mysterious monster. Why do these monsters keep attacking Mahiro?
Don't think you're getting 
away with just that!
¿Crees que con esto es 
todo? ¿Estás preparado?
¡Vamos! ¿Crees que vas a poder irte de rositas?
Não pense que vai se safar
 só com isso! Prepare-se!