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 :

• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Banana Back Item

  Banana Back Item
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Curved Spear
• Force of Taotie

  Reduce damage taken by 7%.
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Taurus Wand

  A necromantic wand with a figurehead of a bull. Used by necromancers in ancient times to amplify their power. Recover 100 HP at the start of every turn. Has a 12% chance to absorb 3% HP of enemies who attack you.
• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Four-Point Shuriken
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• Blue Bird Wings
• Peom Fan

  Reduce 46 HP damage taken.
• Swire Raijinco
• Scarlet Sword Wheel

  Increases damage by 5% and dodge rate by 3%.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Decorate Battle Umbrella
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.