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 :

• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Mirror of Shamisen
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• Scroll: Flying Phoenix
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Flame Soul Electric Guitar
• Fire Symbol Guitar
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Ramen Shop Lantern
• Folding Fan: Shino
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Hanami Folding Fan

  2011 Hanami Festival - Usagi! Increase dodge rate and critical rate by 3%.
• Puppet: Spider
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Shinobi Curse Battle Umbrella
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.