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 :

• Kettle
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Water Energy Skis
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• Trident
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• S26 Bashosen

  Increase 10% Combustion chance.
• S2 Demons erosion

  Recovers 4% of the users max HP every turn. Additional 100 damage on all attacks.
• 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.
• Water Symbol Guitar
• 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.
• Neptunes Healing

  Amazing power from Neptune. 3% chance to convert damage taken to HP positively and recover 3% HP at the start of every turn.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Water Shark Skis
• Sakon Three Blades
• Ice Cystal Raijinco
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Hanagara Dama

  Increase max. CP by 6%
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.