"Joker!"
When everyone thought Joker was cut, the latter actually surpassed their imagination by using his Guardian Sword. Just like his artifact that could change shape, the Guardian Sword turned into a shield that blocked that quick draw.
The sword itself was Gin's idea and the concept came from the God Killing Spear. It wasn't his original. Theo made this technique Original by infusing his will into the sword. In other words, for him, the perfect technique for this ability was the shapeshifting ability that could match his own strength.
'It seems that I need to change its name…' Theo smiled. Since the name came up on a fly, he hadn't put deep thought into its name. So, he was grateful to Sojuro for making him realize the ability he wanted.
With his Perfect Control, he manipulated the form. From its shield form, it changed again to a spear.