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 :

• Shadow Twin Blades
• Peom Fan

  Reduce 46 HP damage taken.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• Deadwood Pipa
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• Grand Light Gourd

  Increase 3% damage
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Mini Scroll
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Dark Plate Twin Blades
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Ichimoku Gourd
• Twins Sakura

  Ignore 5% targets dodge.