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 :

• Scroll: Genbu
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Ferret Tail
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Beast Mace
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Swire Raijinco
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Grand Light Gourd

  Increase 3% damage
• Apple Candy

  Increases damage by 5%. Has 3% chance to convert damage taken to HP positively.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Wooden Hammer
• Yolanda Rescue First Aid Kit
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• Decorate Battle Umbrella
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Mirror of Thousand Hands
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.