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 :

• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Flour Stick
• Golden-bound Cudgel
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Wind Storm Raijinco
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Wood Top
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Clouds And Mist Raijinco
• Black Koi
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Swordfish
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Gunbai: World Peace
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Dark Cry Raijinco
• 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.
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• Screw Pattern Skis