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 :

• Swordfish
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• 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)
• Scroll: Double Head
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Shadow Umbrella
• Red Shuriken Skis
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• Death Wooden Coffin
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Curved Spear
• Bell of Fortune

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

  Increase dodge by 3%. Reduce damage taken by 80.
• Apricot Pipa
• Fire Symbol Guitar
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Flag: Dragon Symbol
• Yolanda Rescue First Aid Kit
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Kettle
• S11 Wood Spirit's Bow

  Increase critical chance 13%.