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 :

• Purple Dragon umbrella
• Hide Guitar
• Village Red Lantern
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Ritual Taiko
• Christmas Treasure Bag

  Increase agility by 1.
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Green Koi
• Merlins Magical book

  Increases attack damage 5%
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Mirror of Shamisen
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Drum: Ako
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Scroll: Guren
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Jingle Bell

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

  Recover HP by 2% and reduce 4% damage taken.
• Yolanda Rescue First Aid Kit
• Mech of Wing

  Reduce damage taken by 10%.
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.