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 :

• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Ramen Shop Lantern
• Christmas Treasure Bag

  Increase agility by 1.
• Green Koi
• Fairy Wings

  Fairy wings that owned by a fairy
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Super Rabbit Doll

  Increase damage by 9%.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Red Shell
• Tai Chi Gold Gourd

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

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Yatai Lantern
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Folding Paper Fan
• Black Silver Electric Guitar
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• GM back item
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.