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 :

• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Water Symbol Guitar
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• S65 Transcendent Flame Wings

  Remnants of a powerful fire spirit. Increases attack damage by 7% and increase 20% Combustion chance. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S26 Bashosen

  Increase 10% Combustion chance.
• S15 Seitenken

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

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Green Koi
• Sakura Rain Battle Umbrella
• Apricot Pipa
• Trident
• Dark World Hammer
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• Ishiyama Lantern

  Reduce damage taken by 49.
• Champion Cup!

  Ultimate prize for Champions.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Curved Spear
• Ritual Taiko
• Blue Shell
• Celestial Wood Raijinco
• Shadow Twin Blades
• War Flag: Syoshin

  Increase mission XP reward by 100.