ya, i was a bit limited on time when i wrote this. but if anyone needs to know stuff bout the legends just ask. heres a brief summary (very brief)

masamune- greatest sword ever. clean cutter

muramasa- cursed sword.

murasame & masamune - cursed combo. put them both in a river, masamune would repel the leaves, whereas murasame would attract and cut them up.

excalibur- king arthur's sword (refer to "The Sword in the Stone"

thats just a brief explanation. if u need anything else, or need me to elaborate, just drop a line and ill do my best