Kiokuya記憶屋; Le dévoreur de souvenirs; The Memory Eraser; Kiokuya

Ryoichi, a student, is researching urban legends and becomes interested in how they spread. As various people around him strangely lose their memories of him, he hears about a mysterious monster, the Kiokuya, which supposedly feeds on people's memories. But does this Kiokuya really exist? And if so, what is its true goal?