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 :

• Carrot Time Bomb

  Has 8% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%. Has 5% chance to convert damage taken to HP positively.
• 2011 Fortune Lantern

  Ninja Saga 2nd Anniversary Carnival!
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• 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.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• Ritual Taiko
• Green Koi
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• 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)
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Toxic Village Poison Potion