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 :

• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• Firefox Tail
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Python Scales Raijinco
• Black Koi
• Stuff Bunny

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

  Increase agility by 1 and Max HP by 1%.
• Hidden Green Umbrella
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Blue Bird Wings
• Scroll: Posion Attack
• Spirit Flag

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

  Increase 2% critical rate and ignore 2% of targets dodge.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Green Koi
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• 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)
• Mech of Wing

  Reduce damage taken by 10%.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Flag: Dragon Symbol
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Ishiyama Lantern

  Reduce damage taken by 49.
• 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)