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 :

• Swire Raijinco
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Black Silver Electric Guitar
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Scroll: Terminated Rock
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• S5 Possessed Koto

  Increase purify chance by 7%. Reduce jutsu CP consumption for 10%. Has 15% Chance to stun target when attack with weapon for 1 turn.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Purple Mixing Yellow Umbrella
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Roasted Turkey

  Restore 20 HP every turn.
• Love of coffee

  Prepared with love and empathy. Recovers 100 HP every turn. Increases attack damage by 4%.
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• Super Rabbit Doll

  Increase damage by 9%.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Thorn hammer
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Civet Cat Tail
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• Kettle