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 :

• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Writing Brush
• Water Energy Skis
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• S65 Transcendent Flame Wings

  Remnants of a powerful fire spirit. Increases attack damage by 7% and increase 20% Combustion chance. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Ritual Taiko
• Scroll: Double Head
• Drum: Ako
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• Death Wooden Coffin
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Master Scroll

  Restores HP & CP by 3%.
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Scroll: Taiin
• Red Shuriken Skis