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 :

• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Ritual Taiko
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• Toxic Village Poison Potion
• Clouds And Mist Raijinco
• Victorious Crown

  Increases accuracy by 4% and recover HP by 3%. Has 13% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Heian-kyo Shamisen
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S2 Demons erosion

  Recovers 4% of the users max HP every turn. Additional 100 damage on all attacks.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Large Wooden Hammer
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Ferret Tail
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Scroll: Fire and Earth
• Orange Kikyo Skis
• Iron Tortoise Shell

  Reduce damage taken by 200.
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.