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 :

• Scroll: Flying Phoenix
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• 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)
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• 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.
• Shigu Twin Blades
• Golden Torch of Zeus

  Recover 150 HP every turn
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Raccoon Tail
• S24 Junsei Ring

  Increase max. HP by 5%.
• Musashi Twin Blades
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Scroll: Yinyang Seal
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Iron Tortoise Shell

  Reduce damage taken by 200.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Blue Shell
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Black Koi
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)