Trapping Cage Fist

After, Sannotō manipulates his arm into a cage-like structure that can surround the target; an incredibly durable technique, Sannotō can increase or decrease its size at will, potentially crushing whatever is held captive inside. Should he need to detach himself from the cage, Sannotō can feed into the structure to maintain its strength for an extended period of time. Furnace of Eight Divisions, a much more powerful version of the technique, is created when it is combined with chakra.