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 :

• Tail Hunter Back Item

  Increase max. HP by 3%.
• Scroll: Taiin
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• Red Koi
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Flour Stick
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Christmas Treasure Bag

  Increase agility by 1.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Shadow Twin Blades
• Raccoon Tail
• Decorate Battle Umbrella
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Wood Top
• Fairy Wings

  Fairy wings that owned by a fairy
• Blue Bird Wings
• White Metal Hammer
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Scroll: Terminated Rock
• Ferret Tail