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 :

• Evil Way Lute

  Has a 50% chance to recover 5% of maximum HP. Has 10% chance to absorb 3% HP
• Mirror of Shamisen
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Successor Fan

  Restores HP & CP by 2%. Has 7% chance to freeze enemy who attacks user (2 turn). Frozen target cannot move but damage taken is reduced by 80%.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• S8 Scroll of Golden Snake

  Increase all attack damage by 4%. Decrease damage taken by 4%.
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Trident
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Black Silver Electric Guitar
• Yolanda Rescue First Aid Kit
• Firefox Tail
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Blue Shell
• Scroll: Kochin
• Dark World Hammer
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Leopard Cat Tail
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.