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 :

• Folding Fan: Shino
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Scroll: Kinjutsu I
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Ancient Pipe

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• Flag: Dragon Symbol
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• 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.
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Shadow Twin Blades
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.