Haemosu (해모수, Son of Heaven) is a powerful one-shot technique that was born within Seireitou's new eyes, the Dàshèng Yóngqíyǎn. The eyes' have a mysterious ability to form thunderclouds, which are required for this technique's execution. This is because the technique uses natural lightning as opposed to elemental madou; its power easily outmatches all other lightning madou techniques. Seireitou is able to then "tame the lightning", and reforge it's shape into a more animal form. It was said that, given lightning's speed of 1/1000th of a second, this technique was unable to miss. The force of this technique is great, but appears to also take a toll on Seireitou's body after useage. In addition, usage seems to destroy the thunder clouds as the sky cleared up of clouds after use. As such, this technique can only be used once in a fight. However, natural lightning can reach a temperature of 30,000 °C, so that even if it misses the target, the sizable blast will likely eliminate the enemy.