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 :

• Trident
• Cerberus's Flame

  80% chance to burn enemy who attack user - Reduce 3% HP for 2 turns.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Blue Bird Wings
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Ukon Three Blades
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Fighting spirit Taiko
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Wooden Repeating Crossbow
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• Swire Raijinco
• Banana Back Item

  Banana Back Item
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Apricot Pipa
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Grand Light Gourd

  Increase 3% damage
• Gunbai: World Peace
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Gold Wand

  Ignore 5% targets dodge.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.