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 :

• War Flag: Furinkazan
• Peom Fan

  Reduce 46 HP damage taken.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Water Energy Skis
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Neptunes Healing

  Amazing power from Neptune. 3% chance to convert damage taken to HP positively and recover 3% HP at the start of every turn.
• Death Wooden Coffin
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Banana Back Item

  Banana Back Item
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Water Symbol Guitar
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Village Red Lantern
• Cerberus's Flame

  80% chance to burn enemy who attack user - Reduce 3% HP for 2 turns.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.