Lightning Seal: Threat Eradication Barrier

Tadashimura has placed a seal on his upper thoracic vertebrae - the blind spot of the Byakugan - to ward of attacks to that specific area. The seal acts as a type of reflector or deflector with the release a to force back and paralyze the oncoming threat. Within the seal is the kanji 否 for "nay". Because it is a seal, it has an involuntary activation but is also linked to his own neural system, therefore if his body takes it as a threat, it will evoke the effects. The seal is set to remain on the body even after death and if such occurred, will shroud the entire body in a layer of chakra that has been fed into the seal before hand. This prevents theft of the Byakugan after death or autopsy on his body without knowing the release hand seals.