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 :

• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Drum: Ako
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Wooden Repeating Crossbow
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Toxic Village Poison Potion
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Peom Fan

  Reduce 46 HP damage taken.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Blue Cloud Umbrella

  Ignore 6% targets dodge.
• Ghost Spider

  Reduce 72 HP damage taken.
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• Flame Soul Electric Guitar
• Native Drum

  5% chance to convert damage taken to HP positively.
• War Flag: World Peace
• Butterfly Wings
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Raijin Raijinco
• S17 Scorching Sun Lantern

  Recover 10% cp after dealing damage.
• Flag: Dragon Symbol
• Turkey Tail
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Trident