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 :

• Firefox Tail
• Golden Torch of Zeus

  Recover 150 HP every turn
• Wind Storm Raijinco
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Scroll: Guren
• Ice Cystal Raijinco
• Black Koi
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Blue Bird Wings
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Raccoon Tail