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 :

• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Santa Gift Bag

  Reduce damage taken by 30.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• Scroll: Yinyang Seal
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Sand Gourd
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Scroll: Grassland
• Firefox Tail
• Ghost Spider

  Reduce 72 HP damage taken.
• Ice Cystal Raijinco
• S15 Frozen Large Sword

  Increase 7% purify chance.
• S59 Rejuvenating Blade Wings

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

  Ignore enemys dodge rate by 8%.
• Dragon Crucifix Spear
• Scroll: Sun of Campaign
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Sakura Rain Battle Umbrella
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.