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 :

• Super Rabbit Doll

  Increase damage by 9%.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Shinobi Curse Battle Umbrella
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Scroll: Flying Phoenix
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• 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.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Flame Soul Electric Guitar
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• Python Scales Raijinco
• S14 Profound Pincers

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

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• Grand Light Gourd

  Increase 3% damage
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• Ferret Tail
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• Mirror of Thousand Hands
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Frost Soul Electric Guitar
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.