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 :

• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• Light Cry Raijinco
• Dark Plate Twin Blades
• Hide Guitar
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Sakon Three Blades
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Flour Stick
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Orange Koi
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• Christmas Pudding

  Recover 200 HP and 200 CP at the start of every turn but reduce agility by 10.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Shigu Twin Blades