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 :

• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Ichimoku Gourd
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Village Red Lantern
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Python Scales Raijinco
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• S2 Ancient Bone Claw

  An ancient bone that emanates great power. Increases accuracy by 8%. Recovers 100 HP every turn.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• Scroll: Flying Phoenix
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.