This technique allows the user to inscribe the symbol for lightning (雷, Ikazuchi) onto a target, which can react with the user's chakra in order to trigger a variety of effects. It should be noted that physical contact with the target is required to inscribe the seal in question. These additional effects require that the user polarizes the inscribed seal with lightning chakra. As the polarization of this seal can have the effect of manipulating phenomenon such as lightning strikes, this technique has been categorized as forbidden, despite its rank.