ty again for the answer haha im really confuse now haha so the wikipedia of gakkou no kaidan is fake i mean in site say this:
Sources:
Am I Beautiful? Kuchisake-onna - Gakkou No Kaidan Wiki
Episode title Am i Beautiful? Kuchisake-onna
English dubbed title None
Airdate Japan : November,2000.
Main Ghost Kuchisake-onna
Minor Ghosts Amanojaku
Previous episode A Hand Reaches out of The Toilet...Akagami Aogami
Next episode Raise the Curtains! The Cursed School Arts Festival! Kutabe
but i have no ideia of this fan vídeo too haha.