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: Rikugo
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Apple Candy

  Increases damage by 5%. Has 3% chance to convert damage taken to HP positively.
• Thorn hammer
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• S15 Frozen Large Sword

  Increase 7% purify chance.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Iron Tortoise Shell

  Reduce damage taken by 200.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• Master Scroll

  Restores HP & CP by 3%.
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Shadow Twin Blades
• Scroll: Yinyang Seal
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Deadwood Pipa
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.