Kachi Katchin (カチカッチン鋼 Kachi Kattchin Kō, lit. "Kachi Katchin Steel") is a more durable variant of Katchin.
Overview[]
In the anime, it was said by the Grand Minister that Kachi Katchin is even stronger than Universe 7's Katchin and was used to create the arena for the Tournament of Power. It is presumably the hardest material in the multiverse. However, when Iwan, Liquiir, and Arak (Gods of Destruction) do battle, they have little trouble breaking the arena with the shockwaves emanating from their physical and ki attacks colliding.
In the manga it is never said what material the Tournament of Power arena is constructed from, leaving it unconfirmed if Katchi Katchin was used.
Despite being the hardest material in the multiverse, it has been broken on more than one occasion; such as by Iwan, Liquiir, and Arak's practice match, again by Goku and Vegeta's combined God Final Kamehameha against the Trio of Danger, again Kale even destroyed the ground around her just by shouting, as well as on several other occasions. As time went on the arena itself took quite a bit of damage, as it is shown to not be flat anymore, with even some of the arena rising out and by the end of the Tournament of Power, the arena made of this material ended up almost totally destroyed, leaving rocks scattered all over the area.
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