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 :

• Folk Folding Fan
• Merlins Magical book

  Increases attack damage 5%
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Kettle
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Python Scales Raijinco
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Three-stringed Lute Guitar
• Fighting spirit Taiko
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• White Metal Hammer
• Turkey Tail
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• S34 Wooden Name Tag

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Yatai Lantern
• Black Koi
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%