Namae no Nai Kaibutsu: Kumo to Shoujo to Ryouki Satsujin

Awakened at midnight by a strange sound echoing through her room, a young woman finds herself confronted by a terrifying pair of legs. From that night on, an unseen presence lingers in the shadows, quietly spinning its web and slowly encroaching upon her daily life. When it finally reveals itself, she discovers not a mindless beast, but an exceedingly beautiful, nameless monster. Unable to resist or escape its reach, she is drawn into a bizarre coexistence, forced to conceal her eerie new roommate from her skeptical lover and friends. As their strange life together unfolds, her human senses begin to quietly fade, and the foundations of her normal existence steadily crumble. Simultaneously, the outside world is shaken by a string of disturbing, bizarre murders that began around the exact time the monster first appeared. Faced with a monumental decision about her future, she starts to wonder whether these gruesome killings are connected to the captivating yet terrifying creature sharing her home.