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 :

• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Fire Symbol Guitar
• Apricot Pipa
• Scroll: Messenger

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Dark Plate Twin Blades
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Mini Scroll
• Yatai Lantern
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• 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.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Scroll: Guren
• Yolanda Rescue First Aid Kit
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Swordfish