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 :

• Hanagara Dama

  Increase max. CP by 6%
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• 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.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Yatai Lantern
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Python Scales Raijinco
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• 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.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Writing Brush
• GM Phone

  GM Phone
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Dragon Crucifix Spear
• Twins Sakura

  Ignore 5% targets dodge.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Jaws

  Ignore 4% targets dodge.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.