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 :

• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Scroll: Sun of Campaign
• Scroll: Rikugo
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• Peom Fan

  Reduce 46 HP damage taken.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• 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)
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Flame Blade Raijinco
• Deadwood Pipa
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Fighting spirit Taiko
• Christmas Bag

  Reduce damage taken by 10.
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• Great Stinger

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Water Symbol Guitar
• Twins Sakura

  Ignore 5% targets dodge.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.