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 :

• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Mini Scroll
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Wooden Repeating Crossbow
• Scroll: Red Curse seal
• Ramen Shop Lantern
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Puppet: Spider
• Civet Cat Tail
• Scroll: Taiin
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• Scroll: Double Head
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Sakon Three Blades
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• 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.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.