Translation: from the sound of footsteps
Betobeto-San is a yôkai that follows travellers at night, making the sound "beto beto" with its wooden sandals. It cannot be seen; only heard.
People who walk the streets alone at night might encounter these harmless, but nonetheless disturbing, yōkai. They synchronize their pace with walkers and follow them as long as they can, getting closer and closer with every step. For the victims, this can be traumatic. The haunting sound of footsteps follows them wherever they go, but when they turn around, there is nothing there.
Though betobetosan can be disconcerting, they are not dangerous. Once you realize you are being followed by a betobetosan, simply step to the side of the road and say “After you, betobetosan.” That is enough to escape from this yōkai. The footsteps will carry on ahead and soon vanish from earshot, allowing you to continue in peace.