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 :

• Christmas Bag

  Reduce damage taken by 10.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Orange Kikyo Skis
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Hide Guitar
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Falcon
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Folding Paper Fan
• Folk Folding Fan
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Scroll: Red Curse seal
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Wind Storm Raijinco