In Japanese Mythology, Mokumokuren (目目連) are spirits that live in torn shōji (Japanese paper sliding walls). If the shōji has many holes, eyes can sometimes be seen on it, which, if looked at long enough, can make people blind. The only way to remove the spirit from the wall is to patch up the holes in it. Mokumokuren is said to be an invention of Toriyama Sekien.