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 :

• Vampire Cloak

  Increase healing power of scrolls by 100.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy 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.
• Shinobi Curse Battle Umbrella
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Writing Brush
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Folding Paper Fan
• Heian-kyo Shamisen
• Shadow Umbrella
• S24 Junsei Ring

  Increase max. HP by 5%.
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Scroll: Kinjutsu I
• Screw Pattern Skis
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Golden-bound Cudgel
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.