Do you know ไธใฎๅปๅใ(Ushi no Koku Mairi)?
visiting a shrine in the dead of night to put a curse of death on somebody.
the nails are driven through a straw effigy of the victim, impaled upon the tree behind it. The ritual must be repeated seven days running, after which the curse is believed to succeed, causing death to the target, but being witnessed in the act is thought to nullify the spell.(from Wikipedia) (edited)