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 :

• S5 Umbrella of Spiritual Pulse

  Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover 5% CP every turn if current CP is less than 50%. Has 8% chance to reduce skill cooldown by 1 turn at the start of each turn. (Not effective on talent skills)
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Village Red Lantern
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Scroll: Tenku
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Gunbai: World Peace
• Gunbai: Gyoji
• Raijin Raijinco
• Scroll: Terminated Rock
• Fighting spirit Taiko
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Swordfish
• Merlins Magical book

  Increases attack damage 5%
• Falcon
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Decorative Rope
• Trident
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.