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 :

• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Wind Storm Raijinco
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• Scroll: Red Curse seal
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S10 Frostguard's Bow

  A magical bow that has a very long range. Reduce target 8% CP on every weapon attack.
• Mech of Wing

  Reduce damage taken by 10%.
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Fire Symbol Guitar
• Light Cry Raijinco
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Raccoon Tail
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• Ukon Three Blades
• Swire Raijinco
• Decorative Rope