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 :

• S27 Golden Gourd

  Recover 5% HP with every Charge.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• Four-Point Shuriken
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Gunbai: Gyoji
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Raccoon Tail
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Great Stinger

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.