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 :

• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Apricot Pipa
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Chakra Message Stick
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Scroll: Tenku
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Spiked Blade

  Increases dodge and critical chance by 4%. Recovers 70 HP each turn.
• Peom Fan

  Reduce 46 HP damage taken.
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Sand Gourd
• Fighting spirit Taiko
• Sakura Rain Battle Umbrella
• Grand Light Gourd

  Increase 3% damage
• Straw Hat

  Increase dodge rate by 3%.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Wood Top
• Sanmoku Gourd

  Reduce damage taken by 65.
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• Ishiyama Lantern

  Reduce damage taken by 49.
• Toxic Village Poison Potion
• Mini Scroll
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.