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 :

• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Yatai Lantern
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Light Cry Raijinco
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Celestial Wood Raijinco
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Shinobi Curse Battle Umbrella
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Scroll: Double Head
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.