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%.
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Frost Soul Electric Guitar
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Santa Gift Bag

  Reduce damage taken by 30.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• Water Energy Skis
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Writing Brush
• Champion Cup!

  Ultimate prize for Champions.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Christmas Treasure Bag

  Increase agility by 1.
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• Large Wooden Hammer