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 :

• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• Trident
• Water Shark Skis
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Apple Candy

  Increases damage by 5%. Has 3% chance to convert damage taken to HP positively.
• Decorate Battle Umbrella
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Scroll: Tenku
• GM back item
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Mimosa
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Sakura Rain Battle Umbrella
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Wind Storm Raijinco
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%