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 :

• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Scroll: Red Curse seal
• Aries Taiko

  A magical taiko used in celebrations during the Aries zodiac months. Recovers 50 HP every turn and reduces damage taken by 25.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Jaws

  Ignore 4% targets dodge.
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Fire Symbol Guitar
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• S2 Ancient Bone Claw

  An ancient bone that emanates great power. Increases accuracy by 8%. Recovers 100 HP every turn.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• Three-stringed Lute Guitar
• Orange Koi
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Scroll: Genbu
• Black Metal Hammer
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• Ocean Ring

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