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 :

• S62 Black Steel Swords

  Restores 5% of users max HP.
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Black Silver Electric Guitar
• Super Rabbit Doll

  Increase damage by 9%.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• 2011 Fortune Lantern

  Ninja Saga 2nd Anniversary Carnival!
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Orange Kikyo Skis
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Scroll: Genbu
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Mini Octopus
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Wooden Hammer
• S5 Possessed Koto

  Increase purify chance by 7%. Reduce jutsu CP consumption for 10%. Has 15% Chance to stun target when attack with weapon for 1 turn.
• Victorious Crown

  Increases accuracy by 4% and recover HP by 3%. Has 13% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.