Bisentō

The Bisentō was essentially a scimitar with an extremely long hilt, having a long, yari-like wooden shaft topped by a broad and heavy curved blade. The length of the shaft gave the wielder incredible leverage, allowing them to deliver great chopping blows that could slice a person in half or cleave through heavy armor. Typically seen among the more militant orders of monks, the bisentō was sometimes used by heavy infantry units, like those of the Daidoji family.