Tetsuzan (斬鉄) is a secret sword technique that normally sets the "blade" as the only concept set inside the blade with a Magic Sequence from Movement Type Magic set to guide the blade's slashing motion. A slash that can smoothly cut deep through thick armor with ease. When Chiba Toshikazu swings his sword enhanced by this magic, his body already knows how to move. Through thousands, tens of thousands, hundreds of thousands of repetitive motions and practice, the slashing action has already been carved into his very body by the time he learned this technique.