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 :

• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Blue Wolf Tail
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• 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.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Gunbai: Gyoji
• Scroll: Fire and Earth
• Screw Pattern Skis
• Dark World Hammer
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Decorate Battle Umbrella
• Swordfish
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Water Energy Skis
• Steel Frame Tail
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Tai Chi Gold Gourd

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

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Carrot Time Bomb

  Has 8% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%. Has 5% chance to convert damage taken to HP positively.