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 :

• Raijin Raijinco
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• War Flag: Furinkazan
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Peom Fan

  Reduce 46 HP damage taken.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Roasted Turkey

  Restore 20 HP every turn.
• Golden Torch of Zeus

  Recover 150 HP every turn
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Civet Cat Tail
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Ichimoku Gourd
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Curved Spear
• S56 Curse Brush

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

  Increase 2% critical rate and ignore 2% of targets dodge.
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.