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 :

• Raijin Raijinco
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• Yatai Lantern
• Ramen Shop Lantern
• Straw Hat

  Increase dodge rate by 3%.
• Light of Eternal

  Increase Max.HP 3%. Recover 3% SP at the start of every turn.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Scroll: Kinjutsu I
• Thorn hammer
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Wine Gourd
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Village Red Lantern
• 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%.
• Sakura Lucky Cat

  Ignore enemys dodge rate by 4% and increase 3% dodge rate.