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 :

• Purple Mixing Yellow Umbrella
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• Karasu Miya Falcon

  Increase dodge rate by 6%.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Cupids Flying Envelop

  A message to a far away lover.
  Reduces damage taken by 60.
  Increases max HP by 5%.
• Carnival Taiko

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

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Mimosa
• Blue Pattern Skis
• Toxic Village Poison Potion
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Spiked Blade

  Increases dodge and critical chance by 4%. Recovers 70 HP each turn.
• Scroll: Red Curse seal
• Force of Taotie

  Reduce damage taken by 7%.
• Hide Guitar
• Smart Phone
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Carp Flag
• Clouds And Mist Raijinco
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Grand Light Gourd

  Increase 3% damage