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 :

• Sanmoku Gourd

  Reduce damage taken by 65.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Orange Kikyo Skis
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Smart Phone
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Nightmare Grudge

  Ignore 4% targets dodge.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Folding Fan: Shino
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Hide Guitar
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• Four-Point Shuriken