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 :

• Wooden Repeating Crossbow
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Light Cry Raijinco
• White Metal Hammer
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Christmas Bag

  Reduce damage taken by 10.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Scroll: Double Head
• Red Shell
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• 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.
• 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)
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• Ghost Spider

  Reduce 72 HP damage taken.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Village Red Lantern
• Ukon Three Blades
• Firefox Tail
• Scroll: Kochin
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%