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 :

• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Three-stringed Lute Guitar
• Businessman Luggage
• Scroll: Tenku
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Scroll: Double Head
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Shinobi Curse Battle Umbrella
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Hidden Green Umbrella
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Twins Sakura

  Ignore 5% targets dodge.
• Scroll: Taiin
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• Force of Taotie

  Reduce damage taken by 7%.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Sakura Rain Battle Umbrella
• Flame Soul Electric Guitar
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Champion Cup!

  Ultimate prize for Champions.
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.