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 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Scroll: Messenger (7 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Black Silver Electric Guitar
• Scroll: Posion Attack
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Blue Cloud Umbrella

  Ignore 6% targets dodge.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Flour Stick
• Hanagara Hagoita

  Increase max. HP by 3%.
• Yolanda Rescue First Aid Kit
• Vampire Cloak

  Increase healing power of scrolls by 100.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.