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 :

• Hanagara Dama

  Increase max. CP by 6%
• Clouds And Mist Raijinco
• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Deadwood Pipa
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Basic Jounin Battle Gear
• Python Scales Raijinco
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Sand Gourd
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Wooden Hammer
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Golden-bound Cudgel
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Civet Cat Tail
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Screw Pattern Skis
• War Flag: World Peace
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• Gruidae Wing

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

  Reduce damage taken by 10.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.