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 :

• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• Heian-kyo Shamisen
• Ferret Tail
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Ukon Three Blades
• Scroll: Flying Phoenix
• Mini Scroll
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• Scroll: Fire and Earth
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• Black Metal Hammer
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Apple Candy

  Increases damage by 5%. Has 3% chance to convert damage taken to HP positively.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Smart Phone
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.