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 :

• Native Drum

  5% chance to convert damage taken to HP positively.
• S70 Magical Cobweb

  Restores CP by 3%. 30% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Swire Raijinco
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Black Silver Electric Guitar
• Shinobi Curse Battle Umbrella
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• S24 Junsei Ring

  Increase max. HP by 5%.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.