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 :

• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Wood Top
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• Father's Heart

  Reduce damage taken by 6%.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Mini Octopus
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Hidden Green Umbrella
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Hanagara Hagoita

  Increase max. HP by 3%.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Swire Raijinco
• Twins Sakura

  Ignore 5% targets dodge.
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Wind Storm Raijinco
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Gunbai: Gyoji
• GM Phone

  GM Phone
• Champion Cup!

  Ultimate prize for Champions.