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 :

• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Heian-kyo Shamisen
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Shadow Twin Blades
• Wooden Repeating Crossbow
• Gold Wand

  Ignore 5% targets dodge.
• Yawata Magatama

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Large Wooden Hammer
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Flame Blade Raijinco
• Ishiyama Lantern

  Reduce damage taken by 49.
• Celestial Wood Raijinco
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Wind Storm Raijinco
• Mirror of Thousand Hands
• Straw Hat

  Increase dodge rate by 3%.
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Scroll: Double Head
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.