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 :

• Fire Symbol Guitar
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• Firefox Tail
• Raccoon Tail
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Wooden Hammer
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Businessman Luggage
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• Red Shuriken Skis
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Ichimoku Gourd
• Screw Pattern Skis
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Love Missile

  Additional 60 HP damage upon all attack.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Puppet: Spider
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)