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 :

• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Firefox Tail
• Scroll: Sun of Campaign
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Large Wooden Hammer
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Hanagara Hagoita

  Increase max. HP by 3%.
• Samurai Painted Wood

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Fathers Treasure

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

  Increases critical rate by 3% and dodge rate by 3%.
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Decorate Battle Umbrella
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Puppet: Spider
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• Flame Soul Electric Guitar
• Red Shell
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.