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 :

• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Puppet: Hakuki (7 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• Brilliant Stock Pot

  Increase max. HP by 8% and purify chance by 2% but reduce max. CP by 8%.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• Sakura Rain Battle Umbrella
• Golden-bound Cudgel
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Smart Phone
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• Horror Scarecrow

  Increase attack damage by 5%. Reduce damage taken by 150.
• Decorative Rope
• Spiked Blade

  Increases dodge and critical chance by 4%. Recovers 70 HP each turn.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Fairy Wings

  Fairy wings that owned by a fairy
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• 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.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Trident
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.