ripped from a half-Japanese cryptid wiki, Issie of Lake Ikeda

Pulled this off a Japanese cryptid wiki that keeps getting reorganized so the page might move, copying the gist. Issie lives in Lake Ikeda down in Kagoshima, it's a volcanic caldera lake, crater lake, super deep. The big year is 1978, supposedly 20 people on the shore watched two humps move across ……