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 :

• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Sakura Gold Jewellery

  Increases users agility by 1. Restores 3% of users max HP. Has 6% chance to convert damage taken to HP positively.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Beast Mace
• Tai Chi Gold Gourd

  Restores HP by 4%. Increase healing power of scrolls by 500%. Reduce target 3% CP on every weapon attack.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Heian-kyo Shamisen
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Love Missile

  Additional 60 HP damage upon all attack.
• Leopard Cat Tail
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Decorate Battle Umbrella
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Python Scales Raijinco
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• Fire Symbol Guitar
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Water Symbol Guitar