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

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Twins Sakura

  Ignore 5% targets dodge.
• 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%
• Dark Cry Raijinco
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Scroll: Tenku
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Mirror of Thousand Hands
• Flour Stick
• Scroll: Genbu
• Mini Goldfish
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Water Symbol Guitar
• Kettle
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• Village Red Lantern
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Musashi Twin Blades
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.