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 :

• Decorative Rope
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• War Flag: Syoshin

  Increase mission XP reward by 100.
• 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)
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• Trident
• Ultimate Taiko

  Recover 120 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Grand Light Gourd

  Increase 3% damage
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Gold Wand

  Ignore 5% targets dodge.
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Orange Koi
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.