Teni

is a powerful attack created by Tsukihime Uchiha, and, according to her, the strongest offensive technique in her arsenal.

Usage
After forming a tiger handseal, Tsukihime channells large amounts of chakra into her hands, placed infront of her in a position whereby the palms are facing forward in unison. The chakra will be then condensed into a large red sphere, which is a reflection of Tsukihime's own aura color, dwarfing houses and matching a mountain in size. Once this is established, Tsukihime will alter the sphere with her fire release chakra to increase the temperature to ludicrus levels whilst using her lightning release chakra at the core. Despite the seemingly long process, Tsukihime has displayed the ability to perform it within a few seconds.

Once the sphere has been enhanced by the natures, Tsukihime will then fire it in the form of a massive red beam with lightning flowing around and inside it, which is capable of annihilating mountains to nothingness. The technique's power has even been noted by Takeya Ogami to surpass his own Hellfire in terms of destructive power, and has been labelled a Kinjutsu even by Tsukihime herself.

Drawbacks
Due to the massive power that come with the use of this technique, drawbacks are also imminent. The undeniable drawback in the technique is that it can only be performed once, as it takes half of Tsukihime's humongous reserves, unless she attains more chakra from another source.