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 :

• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Patriot Aegis

  A mythical shield that can block even the most vicious attacks. Increases max HP by 3%. Has a 60% chance to recover 5% of maximum HP and reduces damage taken by 75.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Santa Gift Bag

  Reduce damage taken by 30.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Mini Scroll
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Shigu Twin Blades
• S62 Black Steel Swords

  Restores 5% of users max HP.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Water Symbol Guitar
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Red Shuriken Skis
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Blue Bird Wings
• Merlins Magical book

  Increases attack damage 5%
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• 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.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.