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 :

• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Musashi Twin Blades
• Water Symbol Guitar
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Puppet: Hakuki (3 Days)

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

  Increase healing power of scrolls by 100.
• Grand Light Gourd

  Increase 3% damage
• Falcon
• Wine Gourd
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Gunbai: World Peace
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Fire Symbol Guitar
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Red Shuriken Skis
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.