Taiyōgetsu

Taiyōgetsu is a powerful close-combat ninjutsu technique invented by Kojimaru Sensōkajiya, combining styles from both his parents' clans. After forming the hand seals, which include a technique-specific seal involving placing a thumb on either side of the Yin-Yang seal on his chest, he channels his polarized chakra to both of his fists, and rushes forwards towards the opponent to attack them with his fists, which glow silver and gold with chakra. Unlike most jutsu, this one's effects last for a long time, enabling him to fight extended close-combat bouts with one usage of the technique. The punches from his right and left fists deliver, in addition to increased physical power, damage to the soul and mind, respectively, with the opponent recovering over the course of a day, causing extreme exhaustion and inability to properly function, and may lead to unconsciousness or death. The polarized chakra in the fists also creates a unique effect, the right fist negating chakra natures based most heavily in Yang chakra, and the left fist negating natures based mostly in Yin chakra, in the side of the body which they strike, making utilization of jutsu difficult for those without the ability to form one-handed seals, and the utilization of multiple natures at once nearly impossible.