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 :

• Gunbai: World Peace
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Wind Storm Raijinco
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• 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.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Three-stringed Lute Guitar
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• War Flag: Furinkazan
• S2 Demons erosion

  Recovers 4% of the users max HP every turn. Additional 100 damage on all attacks.
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Mirror of Thousand Hands
• S22 Shinnoto Monks Staff

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

  Reduces damage received by 7%. Restore 85 HP every turn.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• S24 Junsei Ring

  Increase max. HP by 5%.
• S65 Transcendent Flame Wings

  Remnants of a powerful fire spirit. Increases attack damage by 7% and increase 20% Combustion chance. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Swire Raijinco