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 :

• Red Shuriken Skis
• Vertical Light

  Reduce 15 HP damage taken.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Purple Dragon umbrella
• Scroll: Guren
• Shield of Holy Beast

  Reduce 5% damage taken. 6% chance to convert damage taken to HP positively.
• Scroll: Flying Phoenix
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Dark Plate Twin Blades
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Scroll: Yinyang Seal
• Sakura Lantern

  Increase Combustion chance by 10%.(Minimum requirement of 1 Attribute Point in Fire to activate combustion effect). Has 10% chance to absorb 2% HP of enemy who attack you.
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• 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.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.