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 :

• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Patriot Aegis

  A mythical shield that can block even the most vicious attacks. Increases max HP by 3%. Has a 60% chance to recover 5% of maximum HP and reduces damage taken by 75.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Shigu Twin Blades
• Champion Cup!

  Ultimate prize for Champions.
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Shadow Twin Blades
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Red Shell
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Christmas Treasure Bag

  Increase agility by 1.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Scroll: Rikugo
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• S83 Four Wings

  Increase dodge rate by 8%.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.