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 :

• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• Scroll: Sun of Campaign
• Champion Cup!

  Ultimate prize for Champions.
• Silver Torch of Zeus

  Increase mission gold reward by 300.
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Folk Folding Fan
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Ukon Three Blades
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Beast Mace
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Wine Gourd
• Wooden Hammer
• Shigu Twin Blades
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.