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 :

• Charming Aura (Pink)

  2012 Valentines day limited aura, reduce damage 2%.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• War Flag: Furinkazan
• S24 Junsei Ring

  Increase max. HP by 5%.
• Sakura Lucky Bag

  Increase 3% damage, 4% chance to freeze attackers for 1 turn . Frozen target cannot move but damage taken is reduced by 80%
• Scroll: Posion Attack
• Curved Spear
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• Sealed Wood

  A back item which lost the original effectiveness.
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Scroll: Terminated Rock
• Sakon Three Blades
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Father's Heart

  Reduce damage taken by 6%.
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• Champion Cup!

  Ultimate prize for Champions.
• Light Cry Raijinco
• Flame Blade Raijinco
• Civet Cat Tail
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Mirror of Thousand Hands
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.