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 :

• Christmas Bag

  Reduce damage taken by 10.
• S82 Amethyst Skull

  Increase purify chance by 5%. Recover 15% extra CP when charge.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Musashi Twin Blades
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• Fire Symbol Guitar
• Balloon Rabbit Doll

  Has 8% chance to convert damage taken to HP positively.
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Dark World Hammer
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• War Flag: World Peace
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Screw Pattern Skis
• Decorate Battle Umbrella
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• 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%.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Wooden Repeating Crossbow
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Senior Kari Bagpack

  Reduce 3% damage taken.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Dragon Crucifix Spear