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 :

• Steel Frame Tail
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Christmas Treasure Bag

  Increase agility by 1.
• Three-stringed Lute Guitar
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Musashi Twin Blades
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• Folk Folding Fan
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Victorious Crown

  Increases accuracy by 4% and recover HP by 3%. Has 13% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Civet Cat Tail
• Puppet: Spider
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• Scroll: Red Curse seal
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.