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 :

• Folk Folding Fan
• Super Rabbit Doll

  Increase damage by 9%.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Light Cry Raijinco
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Red Koi
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Horror Scarecrow

  Increase attack damage by 5%. Reduce damage taken by 150.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Twins Sakura

  Ignore 5% targets dodge.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Black Metal Hammer
• GM Goldfish

  GM Goldfish
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Shigu Twin Blades