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 :

• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• GM back item
• Hanami Fan

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

  Ignore enemys dodge rate by 6%.
• Carp Flag
• Red Koi
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Peom Fan

  Reduce 46 HP damage taken.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Red Shell
• Dragon Crucifix Spear
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Sanmoku Gourd

  Reduce damage taken by 65.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Yawata Magatama

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.