How do you get the muramasa sword on Megaman battle network 2?

In MegaMan Battle Network 2, you can obtain the Muramasa sWord by defeating the optional boss, the "SWordy" enemy, located in the Undernet. After defeating SWordy, you'll be rewarded with the Muramasa Battle Chip. Make sure to have the necessary skills to defeat this challenging enemy, as the Muramasa is a powerful chip that allows for strong sWord attacks.