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 :

• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Musashi Twin Blades
• Firefox Tail
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Drum: Ako
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• S24 Junsei Ring

  Increase max. HP by 5%.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Vertical Light

  Reduce 15 HP damage taken.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• 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.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Yolanda Rescue First Aid Kit
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• 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%.
• 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)
• Sack of Hearts

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

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• Rose Bouquet

  Recover CP by extra 5% per charge
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.