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
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Red Koi
• Hidden Green Umbrella
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Orange Kikyo Skis
• Musashi Twin Blades
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Fairy Wings

  Fairy wings that owned by a fairy
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Hanagara Dama

  Increase max. CP by 6%
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Scroll: Red Curse seal
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• Sakon Three Blades
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.