Haiyore! Nyaruko-san

A formless deity associated with chaos, capable of appearing as a silver-haired girl, intervenes when a high school student is pursued by an alien creature. She reveals that beings from H. P. Lovecraft's stories are extraterrestrial and that she has been assigned to shield the student from alien abduction. Over time, she shares her home with the student, along with two other Lovecraft-inspired aliens.