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 :

• 2011 Fortune Lantern

  Ninja Saga 2nd Anniversary Carnival!
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Civet Cat Tail
• Water Shark Skis
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Great Stinger

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Red Shuriken Skis
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Dark Cry Raijinco
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Ukon Three Blades
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Merlins Magical book

  Increases attack damage 5%
• Grand Light Gourd

  Increase 3% damage
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Ferret Tail
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.