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 :

• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Yatai Lantern
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Christmas Treasure Bag

  Increase agility by 1.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Sanmoku Gourd

  Reduce damage taken by 65.
• Water Shark Skis
• White Metal Hammer
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Water Energy Skis
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• 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.
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Wind Storm Raijinco
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Rose Cloak

  Restores 80 CP at the start of every turn. Converts 8% of damage taken into CP.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• S23 Meschiken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)