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 :

• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Christmas Chimney

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

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Mirror of Shamisen
• S2 Demons erosion

  Recovers 4% of the users max HP every turn. Additional 100 damage on all attacks.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Sakura wah

  Restores HP by 3% and CP by 99 each turn.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Red Ukiyo-e Kite

  4% chance to convert damage taken to HP positively and increase max. HP by 2%.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• S47 Kami's Blessing

  Increase critical chance 6% and critical damage 10%.
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Father's Heart

  Reduce damage taken by 6%.
• S43 Extreme Lotus

  The back item contains 30% chance to absorb 3% HP of enemy which makes attack on you.
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Toxic Village Poison Potion
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• 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%
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Businessman Luggage