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 :

• S8 Underworld Bulwark

  A phantom shield with demon soul. Reduce damage taken by 10%.
• Blue Wolf Tail
• 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.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Scroll: Sun of Campaign
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Water Shark Skis
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Screw Pattern Skis
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Red Koi
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Heian-kyo Shamisen
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Christmas Treasure Bag

  Increase agility by 1.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.