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 :

• Karasu Miya Falcon

  Increase dodge rate by 6%.
• S12 Ancient Blood Evil Gourd

  Increase max. HP by 5%. But reduce Max.CP by 1%.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S42 Tendo Tips

  Increases attack damage and reduces damage received by 5%.
• Village Red Lantern
• Folding Paper Fan
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Ferret Tail
• Scroll: Kinjutsu I
• Father's Heart

  Reduce damage taken by 6%.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Flour Stick
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Smart Phone
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• White Metal Hammer
• Fighting spirit Taiko
• Big Cask

  Increase max.HP by 15% but reduce max. CP by 5%.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Steel Frame Tail
• Scroll: Tenku
• Four-Point Shuriken