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 :

• S24 Junsei Ring

  Increase max. HP by 5%.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Water Shark Skis
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Ancient Pipe

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

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• S5 Umbrella of Spiritual Pulse

  Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover 5% CP every turn if current CP is less than 50%. Has 8% chance to reduce skill cooldown by 1 turn at the start of each turn. (Not effective on talent skills)
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Blue Bird Wings
• GM Phone

  GM Phone
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Chakra Message Stick
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Firefox Tail
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.