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 :

• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Heian-kyo Shamisen
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Father's Heart

  Reduce damage taken by 6%.
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Iron Tortoise Shell

  Reduce damage taken by 200.
• Scroll: Tenku
• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• 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.
• Cerberus's Flame

  80% chance to burn enemy who attack user - Reduce 3% HP for 2 turns.
• Wooden Repeating Crossbow
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Smart Phone
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Raccoon Tail