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 :

• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Steel Frame Tail
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Mimosa
• Gunbai: World Peace
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Light Cry Raijinco
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Scroll: Kochin
• Sealed Wood

  A back item which lost the original effectiveness.
• Christmas Bag

  Reduce damage taken by 10.
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Native Drum

  5% chance to convert damage taken to HP positively.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.