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 :

• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• Blue Shell
• Folding Fan: Shino
• Light Cry Raijinco
• Wood Top
• Roasted Turkey

  Restore 20 HP every turn.
• Flame Soul Electric Guitar
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Flour Stick
• Leopard Cat Tail
• Fairy Wings

  Fairy wings that owned by a fairy
• Sealing the soul barrel
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Sakon Three Blades
• Swordfish
• Patriot Aegis

  A mythical shield that can block even the most vicious attacks. Increases max HP by 3%. Has a 60% chance to recover 5% of maximum HP and reduces damage taken by 75.
• Deadwood Pipa
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Christmas Stick

  Increase 1% damage. Recover 3% HP with every Charge.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)