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 :

• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• Wine Gourd
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Patriot Aegis

  A mythical shield that can block even the most vicious attacks. Increases max HP by 3%. Has a 60% chance to recover 5% of maximum HP and reduces damage taken by 75.
• Green Koi
• Turkey Tail
• Merlins Magical book

  Increases attack damage 5%
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Flame Soul Electric Guitar
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Peom Fan

  Reduce 46 HP damage taken.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• Dark Cry Raijinco
• Santa Gift Bag

  Reduce damage taken by 30.
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Wooden Repeating Crossbow
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.