Haiyoru! Nyaruani: Remember My Mr. Lovecraft - S01

The story follows Nyarlko, a shape-shifting Cthulhu entity that can mimic anyone, though it often appears as a silver-haired girl who seems unremarkable at first glance. One night, Mahiro Yasaka-an average high school student-finds himself hunted by aliens until Nyarlko steps in to rescue him.