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 :

• Sand Gourd
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Scroll: Rikugo
• Thorn hammer
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Wine Gourd
• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Sanmoku Gourd

  Reduce damage taken by 65.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• Scroll: Kinjutsu I
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Shoguns Badge Gourd

  Increase Max. HP & CP by 3%
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Heian-kyo Shamisen
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Merlins Magical book

  Increases attack damage 5%
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• S49 Serpent Dragon Chakram

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

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Purple Dragon umbrella
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.