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 :

• Senior Kari Bagpack

  Reduce 3% damage taken.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Thorn hammer
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• S2 Demons erosion

  Recovers 4% of the users max HP every turn. Additional 100 damage on all attacks.
• Trident
• Santa Gift Bag

  Reduce damage taken by 30.
• Chakra Kanawa

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

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• GM back item
• Rose Bouquet

  Recover CP by extra 5% per charge
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• Blue Bird Wings
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Red Koi
• Large Wooden Hammer
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.