This is not a Clothing Set that gives the wearer additional bonuses.
It is simply a set of clothing that are all dropped by the same boss and are usually worn together.
Theses items can be found in the Mansion of Silver Coins and can be worn at FD12.

League of Beggars

• Mansion of Silver Coins' Verdant Hat
• Mansion of Silver Coins' Verdant Jacket
• Mansion of Silver Coins' Verdant Pants
• Mansion of Silver Coins' Verdant Wristbands
• Mansion of Silver Coins' Verdant Boots

Shaolin

• Mansion of Silver Coins' Fashen Hat
• Mansion of Silver Coins' Fashen Jacket
• Mansion of Silver Coins' Fashen Pants
• Mansion of Silver Coins' Fashen Wristbands
• Mansion of Silver Coins' Fashen Boots

Wu Tang

• Mansion of Silver Coins' Yuxu Hat
• Mansion of Silver Coins' Yuxu Jacket
• Mansion of Silver Coins' Yuxu Pants
• Mansion of Silver Coins' Yuxu Wristbands
• Mansion of Silver Coins' Yuxu Shoes