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 :

• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Dark Plate Twin Blades
• Swordfish
• Drum: Ako
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Smart Phone
• Banana Back Item

  Banana Back Item
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Ice Cystal Raijinco
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Black Silver Electric Guitar
• Cerberus's Flame

  80% chance to burn enemy who attack user - Reduce 3% HP for 2 turns.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Wooden Repeating Crossbow
• Yolanda Rescue First Aid Kit
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• Cursed Devil

  Increase attack damage by 15%. But reduce max. HP and max. CP by 10%
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Black Metal Hammer
• Ichimoku Gourd
• Vampire Cloak

  Increase healing power of scrolls by 100.