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 :

• Dragon Crucifix Spear
• S2 Ancient Bone Claw

  An ancient bone that emanates great power. Increases accuracy by 8%. Recovers 100 HP every turn.
• Shigu Twin Blades
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Ritual Taiko
• Flame Soul Electric Guitar
• Steel Frame Tail
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Decorate Battle Umbrella
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Turkey Tail
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.
• Father's Heart

  Reduce damage taken by 6%.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Peom Fan

  Reduce 46 HP damage taken.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Purple Dragon umbrella
• Three-stringed Lute Guitar
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Heian-kyo Shamisen
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• Ultimate Taiko

  Recover 120 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.