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 :

• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Apricot Pipa
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Golden Torch of Zeus

  Recover 150 HP every turn
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• Ferret Tail
• Dark Cry Raijinco
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Chakra Message Stick
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Wooden Repeating Crossbow
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Smart Phone
• Love Missile

  Additional 60 HP damage upon all attack.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Fire Symbol Guitar
• Scroll: Tenku
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Water Shark Skis
• Ghost Spider

  Reduce 72 HP damage taken.