Name: Onitsugai (Madara and Izuna exclusive)
Classification: Ninjutsu and Kinjutsu
Rank: S-Rank
Class: Offensive
Range: Melee
Description: This is a combination tech created by fusing Madara's Rasengan and Izuna's Chidori to create a powerful melee attack. Madara first focuses his Rasengan into his left hand and holds it up before Izuna, who creates a Chidori in his right hand, wraps the Chidori around the Rasengan. Both of them then synchronise speed, moving at the speed of the fastest person due to the chakra exchange forcing their power to equal for a short time. They then charge towards the opponent and slam the Onitsugai into the opponent's chest whereupon the condensed and unmixable chakra detonates into a massive chakra based explosion inside the opponent's body. This technique, much like Chidori does piercing equal to the speed that both of them are moving and also does damage equivalent to speed. (D-SSS for both). Also, the explosion then causes A-Rank damage to all opponents in a twenty foot radius for one post by sending out a condensed wave made of a mix of Madara's and Izuna's chakra, causing all opponents to experience extreme electrical pain from the remnants of the Chidori held together by the excess chakra from the Rasengan.