Iron Cutting Authority

Description
This skill enables the user to cut through anything, regardless of level and rank. However, it costs an enormous amount of MP.

Trivia

 * The name "Zantetsuken" is a well-used trope in anime and Japanese media, including in Lupin III, Final Fantasy, Naruto, Kingdom Hearts, etc. However, the kanji used for the last syllable, "ken," has been switched from the kanji for sword (剣) to the kanji for authority (権). This implies that it's not the sword that is capable of cutting through iron (and by extension, "everything else"), but that it's Setsuna herself who possesses the authority to cut through anything.