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 :

• Leopard Cat Tail
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Scroll: Fire and Earth
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Black Silver Electric Guitar
• Chakra Message Stick
• Banana Back Item

  Banana Back Item
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Senior Kari Bagpack

  Reduce 3% damage taken.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Mirror of Thousand Hands
• Gold Wand

  Ignore 5% targets dodge.
• Businessman Luggage
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.