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 :

• Sakon Three Blades
• Orange Kikyo Skis
• S59 Rejuvenating Blade Wings

  Increases Max. HP by 6% and Max. CP by 4%.
• Screw Pattern Skis
• Steel Frame Tail
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Folding Paper Fan
• Ramen Shop Lantern
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• Victorious Crown

  Increases accuracy by 4% and recover HP by 3%. Has 13% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• Hide Guitar
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Black Metal Hammer
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• Mace of Pandemonium

  Increases attack damage by 6%. Has 4% chance to convert damage taken to HP positively.
• Firefox Tail
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• S83 Four Wings

  Increase dodge rate by 8%.
• Angel Heart (Black)

  Reduce target 8% CP on every weapon attack.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• S2 Scroll Capsule

  Increase attack damage by 8%. Recover 7% cp after dealing damage.
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.