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 :

• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Dark Blade

  Increase 2% critical rate and ignore 2% of targets dodge.
• Mirror of Thousand Hands
• Scroll: Kinjutsu I
• Orange Koi
• Champion Cup!

  Ultimate prize for Champions.
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Three-stringed Lute Guitar
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Yatai Lantern
• Scroll: Rikugo
• Fire Symbol Guitar
• Thorn hammer
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Successor Fan

  Restores HP & CP by 2%. Has 7% chance to freeze enemy who attacks user (2 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Christmas Treasure Bag

  Increase agility by 1.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Mirror of Shamisen