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 :

• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Three-stringed Lute Guitar
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Flame Soul Electric Guitar
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Scroll: Terminated Rock
• S15 Seitenken

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

  Recover 120 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Turkey Tail
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Four-Point Shuriken
• Vertical Light

  Reduce 15 HP damage taken.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.