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 :

• Tail Hunter Back Item

  Increase max. HP by 3%.
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Ame no Kemagatama

  Increase 3% accuracy.
  Additional 30 HP damage upon all attack.
• Roasted Turkey

  Restore 20 HP every turn.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Sanmoku Gourd

  Reduce damage taken by 65.
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• Four-Point Shuriken
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Black Metal Hammer
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Ichimoku Gourd
• Mini Goldfish
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Raijin Raijinco
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.