Ashina Castle, on top of the stairs past the Ashina Castle Sculptor’s Idol
How to defeat this boss?
This mini-boss is surrounded by four musketeers. You have to kill them all so you can sneak behind him and land a backstab. Access the rooftops to the right so you’ll have a clear view of the enemies below. When they’re not aware of your presence, a full-charged shot from a Gouging Top is enough to take them out in one throw.
Once the musketeers are dead, you can jump to the ledge behind the building where he’s standing so you can circle behind him and land a stealth blow.
His move set is almost the same as the other general mini-bosses. His perilous attack is a short sword sweep and he has a jumping attack that you can sidestep and counterattack. He’s not that quick but he can deflect and counterattack on his own so avoid being too aggressive and focus on counterattacking. Keep doing this until he’s defeated.