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 :

• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Samurai Painted Wood

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Christmas Treasure Bag

  Increase agility by 1.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Scroll: Posion Attack
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Grand Light Gourd

  Increase 3% damage
• Flame Blade Raijinco
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Basic Jounin Battle Gear
• Hide Guitar
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• S12 Ancient Blood Evil Gourd

  Increase max. HP by 5%. But reduce Max.CP by 1%.
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Jaws

  Ignore 4% targets dodge.
• Writing Brush
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Blue Shell
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.