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 :

• Steel Frame Tail
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Decorative Rope
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Sanmoku Gourd

  Reduce damage taken by 65.
• Orange Koi
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• Civet Cat Tail
• Writing Brush
• Hanami Folding Fan

  2011 Hanami Festival - Usagi! Increase dodge rate and critical rate by 3%.
• Sealed Wood

  A back item which lost the original effectiveness.
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• S34 Wooden Name Tag

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

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Father's Heart

  Reduce damage taken by 6%.
• Shadow Umbrella
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Water Symbol Guitar
• 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.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Four-Point Shuriken