You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• Steel Frame Tail
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Shadow Twin Blades
• Senior Kari Bagpack

  Reduce 3% damage taken.
• GM back item
• Nightmare Grudge

  Ignore 4% targets dodge.
• Raccoon Tail
• Hidden Green Umbrella
• Scroll: Fire and Earth
• Wooden Repeating Crossbow
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Sanmoku Gourd

  Reduce damage taken by 65.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Musashi Twin Blades
• Merlins Magical book

  Increases attack damage 5%
• Butterfly Wings
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• S83 Four Wings

  Increase dodge rate by 8%.
• Golden-bound Cudgel
• Flame Soul Electric Guitar
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• S26 Bashosen

  Increase 10% Combustion chance.
• Straw Hat

  Increase dodge rate by 3%.