Kasumie is a mammalian cryptid reported from Lake Kasumigaura, Ibaraki Prefecture, Japan.
Description[]
On April 10, 2018, a YouTuber by the name of honehone was visiting Lake Kasumigaura and filming a video when he spotted a beaver-like creature. The creature was confirmed to be a beaver based on the features of its tail.
Since beavers are not commonly kept as pets, it is not known why such a creature was found at Lake Kasumigaura.