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 :

• Silver Torch of Zeus

  Increase mission gold reward by 300.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Water Symbol Guitar
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Celestial Wood Raijinco
• Balloon Rabbit Doll

  Has 8% chance to convert damage taken to HP positively.
• White Guitar
• Sanmoku Gourd

  Reduce damage taken by 65.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• GM Phone

  GM Phone
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Scroll: Terminated Rock
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Basic Jounin Battle Gear
• Businessman Luggage
• Father's Heart

  Reduce damage taken by 6%.