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 :

• Curved Spear
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Golden-bound Cudgel
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Swire Raijinco
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Deadwood Pipa
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Butterfly Wings
• S2 Ancient Bone Claw

  An ancient bone that emanates great power. Increases accuracy by 8%. Recovers 100 HP every turn.
• Firefox Tail
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• Light Cry Raijinco
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Scroll: Red Curse seal
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• Father's Heart

  Reduce damage taken by 6%.
• Purple Mixing Yellow Umbrella
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• S9 Ancient Akazonke Gunbai

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